Accord Alliance Bangladesh Worker Safety

Accord Alliance Bangladesh Worker Safety

Accord Alliance Bangladesh Safety

Accord Alliance Bangladesh -Audit Programs of alliance for bangladesh worker safety by Accord & Alliance team, to appraise the building, Electrical and fire Safety, are being carried out in all the member factories of BGMEA and already approximately 400 factories have been audited. On the Other hand as a routine procedure Safety audit under social compliance are also being carried out by the buyers. Accord is carrying out these audits based on BNBC Standards. On the other hand buyer’s routine audits are being carried out based on BNBC, local laws & rules, Fire Service defense Acts etc.

In certain instances due to conflicting issues relating to set standards between local laws, fire service and civil defenses & BNBC laws, factories are facing confusion & decision problems.

Accord Audit Team has advised to refrain from taking any sort of corrective/remidial measures before getting their formal report. According to them if corrective measures are carried out without knowing their observation and decision the whole process may have to be repeated again which will be a wastage of time and money.

While Accord Alliance is advising to go for corrective measure only after getting their reports buyers are serving notice for stoppage of work if there is noncompliance of safety issues of social audits at a short notice or no time.

Due to these conflicting situations it has become extremely difficult to run the business .To solve this problem we are hereby requesting to stop the safety part of the social audit.

SERIAL SHIPPING CONTAINER CODE (SSCC) LABELS

SSCC Label Format: Effective 6/15 CRD shipments, True Alliance requires Vendors to be Serial Shipping Carton Code (SSCC) label compliant and to provide an electronic Advanced Shipping Notification (ASN) for each Purchase Order.

SSCC compliance Applicable for all Sea freight Modes

Airfreight is currently not in scope for SSCC compliance.

SSCC label printing and electronic Advanced Shipping Notification (ASN) Process: Vendor will use NGC to print True Alliance SSCC label based on existing label printing process.  The label print program needs to be updated in order to print this SSCC label. We will keep vendors updated as soon as it is ready for upgrade. Please stay tuned.

Factory ASN will be sent to DHL when vendor clicks on ‘Factory Release’ in NGC (see the steps in Appendices section).

The container number will be given by DHL 1 day before ETD (Vessel Sailing Date). Vendor is required to fill out all shipment information accurately with correct container number and click on ‘Factory Release’ by ETD (Vessel Sailing Date). All data entered in NGC for ‘Factory Release’ must be correct and same as final booking. Vendor needs to inform DHL origin once ‘Factory Release’ is completed.

SSCC Label Placement and Location: True Alliance requires Vendors to be SSCC Label Compliant.

  • All vendors must be SSCC compliant by orders from CRD 15th Jun, 2015 onwards.
  • Applicable for Cargo loaded from Ports in: China, Hong Kong, South East Asia, India, and Bangladesh.

The SSCC barcode must be applied at an individual carton level. Only one SSCC per carton is required.

For cartons and outer cases, SSCC labels should be placed on either side of the carton so that the lowest edges of the bars of the GS1-128 Bar Code containing the SSCC are 32mm from the base of the unit. The SSCC barcode, including the quiet zone, must be 20mm from the carton edge.

Upon this new procedure of SSCC label started, therefore, the barcode sticker originally stick on carton outside is no longer needed.

Appendices for Accord Alliance Bangladesh

ermMeaningTermMeaning
A/FAir FreightGT Nexus or GTNDHL PO Tracking System
ADPArrival Discharge PortGWYGateway
AMLOAmerica (Latin)HAWBHouse Air Way Bill
AMNOAmerica (North)HAZMATHazardous Material
ASPAAsia Pacific RegionHBL or HB/LHouse Bill of Lading
AWBAirway BillHC / HQHigh Cube (container)
Board GradeThe quality standard to be used for shipping cartonsHot BoxPre-determined urgent shipment
BL or B/LBill of LadingHTSHarmonised Tariff Schedule
C&FCost & FreightISCInternational Supply Chain
CBMCubic MetresKG or KGSKilograms
CBOCentral Buying OfficeKPIKey Performance Indicators
CCConsolidation CentreL/CLetter of Credit
CETCentral European TimeLCLLess than a Container Load
CFSContainer Freight StationLPOLocal Production Office
CIFCost Insurance FreightLSDLate Ship Date
CNEEConsigneeMAWBMaster Air Way Bill
CoOCertificate of OriginMBL or MB/LMaster Bill of Lading
CRDCargo Ready DateNDCNational Distribution Centre
CTNSCartonsNVOCCNon-Vessel Owning Cargo Carrier
CYContainer Yard (i.e. Factory Load)OveragesThe quantity in surplus of a standard pack quantity
DCDistribution CentreO B/LOriginal Bill of Lading
  PO or P/OPurchase Order
DDNDelayed Document NoticePODPort of Discharge
DDPDeliver Duty PaidPOLPort of Loading
DDUDeliver Duty UnpaidSKUStock Keeping Unit
DGFDHL Global ForwardingSLAService Level Agreement
EANEuropean Article Number (International Article Number)SLIShipper’s Letter of Instructions
EDIElectronic Data InterchangeSNShipment Notification
EMENATEurope, Middle East, North Africa, TurkeySO or S/OShipping Order
ESDEarly Ship DateSOPStandard Operating Procedures
ETAEstimated Time of ArrivalSSCCSerial Shipping Container Code
ETDEstimated Time of DepartureTamper EvidentTape that makes unauthorized access to the protected object easily detected
EXWEx-WorksTBATo Be Announced/Assigned/Agreed
FCAFree Carrier AlongsideTBCTo Be Confirmed
FCLFull Container LoadTBDTo be defined/determined
FCRForwarder’s Cargo ReceiptTEUTwenty Foot Equivalent Unit
FOBFree on BoardTTTransit time
GOHGarments on Hanger  

Accord Alliance for Bangladesh Worker Safety Letter

Sub: To withhold the safety part from social compliance audit.

Dear Sir,

This is to advise you that ACCORD & Alliance is carrying out building, fire & electrical safety audits. ACCORD Audits team has advised to refrain from any corrective action/remedial action before getting their audit report. They advised that it will be a mistake if corrective actions mentioned in their report are not addressed to and for this a repeat work might be required which will cost money. There may be chance of duplicity for the demands for Accord & Social Audit.

While ACCORD /Alliance is suggesting to go for correction action only after getting  their report Buyers are stopping work with short/no time notice for noncompliance of the safety part of their social audit. Due to this conflicting situation it has become very difficult to run the business. To solve the problem we are requesting to withheld the safety part of Buyers social Audit.

Thank You

Yours Sincerely,

On Behalf of all sister concern of Auto Group

More Letter

Dear Alliance Factory,

Our company, COMPANY NAME, is a member of the Alliance for Bangladesh Worker Safety. The Alliance is a group of 27 apparel companies that are deeply committed to ensuring safe working conditions in Bangladeshi RMG factories. Through the Alliance, we and the other members are collaborating on core programs and activities that include: factory assessments (against the Alliance’s Fire and Electrical Safety and Building Integrity Standards), fire safety training for workers and management, and management of a Worker Support Program (to assist temporarily displaced workers if factories must be closed for safety reasons). Over the next few months, you will receive more detailed information about the Alliance’s programs, activities, and resources as we move into the implementation phase.

The Alliance opened its Dhaka office in December 2014, and currently has 15 staff, with more to join soon. On behalf of its 26 member companies, the Alliance Dhaka staff will coordinate and oversee all Alliance activities and will be an important, helpful resource for you.

A member of the Alliance Dhaka office will be contacting you shortly—by phone and/or email—to talk about the Alliance and request and/or verify basic information about your factory, such as factory address, primary contact, number of workers, etc. This information will be used for all future communications and to maintain an updated Alliance factory list (published each month) and database. As the Alliance Dhaka staff is contacting you on behalf of our company (and other buyers that are part of the Alliance), we request that you kindly provide him/her with the information requested in a timely manner. If you are not comfortable providing the information requested over the phone, you may request to do so via email.

Going forward, you should expect to receive communication from the Alliance Dhaka staff regarding factory assessment scheduling, remediation, training, events, meetings, and more. We will remain very much engaged in all activities, and welcome you to contact us if you have questions or concerns about the role of the Alliance Dhaka office. We can assure you that the Alliance staff are working on behalf of, in consultation with, and with the support of its membership, and appreciate your cooperation with them.

Lastly, if you would like to reach out to the Alliance office, you may contact:Accord Alliance for bangladesh worker safety team for Accord Alliance Bangladesh

Authorization Latter Sample for a Garments Garden

Authorization Latter Sample for a Garments Garden

Dear Sir,

Authorization Latter Sample – We, Autogarment Company Ltd., Address: Rm6001, No.1, Green Land Technology Square, Lane 58, East Xinjian Road, Shanghai, China hereby agree to authorize M/s Auto Agriscience Limited, Marketing Agent and also submit our file for the products of Zinc Sulphate (Hepta) Fertilizer to register in Bangladesh. We have confirmed that we are the basic manufacturer of the above products in china. We also authorize your company to complete all the necessary formalities regarding Registration of the above mentioned product with the Field Service Wing, Department of Agricultural Extension of Bangladesh, Khamarbari, Farmgate, Dhaka-1215, and Compliance Bangladesh.

Sincerely Yours,

For, Autogarment Company Ltd.,

Authorized Signature

SPECIFICATION Authorization Latter Sample

Fertilizer Name: Zinc Sulphate (Hepta)

Specification:

  1. Total Zinc content by weight                                  0 % (Mini)
  2. Water soluble zinc of total zinc                              0 % (Mini)
  3. Sulphur ( as SO4-S) content by weight                   5 % (Mini)
  4. Magnesium (Mg) 0 % (Maxi)
  5. Copper (Cu) 1 % (maxi)
  6. PH not less than 4
  7. Matter insoluble in water by mass 0 % (Maxi)
  8. Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)

(b) Granular     5.0 % (Maxi)

  1. Particle size (In the granular product):- 90 % of the material shall pass

through 3-1mm BDS sieve.

  1. Physical condition Granular free flowing / Crystalline

Country of Origin: China

For, Autogarment Company Ltd.,

Authorized Signature

MANUFACTURE GURANTED ANALYSIS CERTIFICATE

We, Autogarment Company Ltd., as the manufacture, hereby by certify that “the product of boric acid fertilizer does not contain toxic wastes and the level of heavy metals present is not hazardous for human health, crop and environment”.

For, Autogarment Company Ltd.,

Authorized Signature

TECHNICAL LETERATURE

Major composition                : Zinc  Sulphate (Hepta)

Appearance                           : Granular Free Flowing / Crystalline

Characteristics                       : Feels greasy, Odorless and tasteless.

Purity                                                 : 99.90%

Solubility                                : Soluble in water, alcohol, glycerol ether and volatile oil.

Chemical Properties              :           Normal Sulphate Low Sulphate

Purity: 99.90% min 99.90% min
B2O3:56.25% min 56.25% min
SO4:500 ppm max 130 ppm max

Physical Properties                :           Crystalline

Molecular Weight:61,83 61,83
Specific Gravity:1,435 gr/cm3 1,435 gr/cm3
Bulk Density: 0,8 gr/cm3 0,8 gr /cm
Fractions +1 mm 4%max +1 mm 4%max
-0,060 mm 4% max -0,060 mm 5% max

Stability                                  :

  1. a) When heated to 70 – 100oC, hydro-extraction enables

changing to meta-boric acid

  1.  b) When heated to 150 – 160oC, hydro-extraction enables

changing to pyroboric acid

  1. c) When heated to 300oC, hydro-extraction enables

changing to boric anhydride

Standard                                : GB-53890 (People’s Republic of China standard

Use                                          : It can be used as fertilizer, top application, split application

`             and as a raw material for manufacture of micro nutrient. It

can be used all type of field crops.

Packing                                  : In woven polypropylene lined with poly ethylene film bags

of 25 kg (+/- 0.5 kg) net each.

Specification                          :

  1. Total Zinc content by weight                         0 % (Mini)
  2. Water soluble zinc of total zinc                                 0 % (Mini)
  3. Sulphur ( as SO4-S) content by weight                      5 % (Mini)
  4. Magnesium (Mg) 0 % (Maxi)
  5. Copper (Cu) 1 % (maxi)
  6. PH not less than 4
  7. Matter insoluble in water by mass 0 % (Maxi)
  8. Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)

(b) Granular     5.0 % (Maxi)

  1. Particle size (In the granular product):- 90 % of the material shall pass

through 3-1mm BDS sieve.

  1. Physical condition Granular free flowing / Crystalline

Declaration                            : The manufacturers guaranteed analysis shall indicate that “the product does not contain toxic wastes and the level of heavy metals present is not hazardous for human health, crop and environment”.

What is Oxidization Tank? Describe the Process.

What is Oxidization Tank? Describe the Process.

Oxidization Tank

Waste water from the knit dyeing project destroy the quality of water body in which they are exposed affecting the marine life. It also has a harmful effect of sewerage handling system and agricultural land. The characteristics and effect of effluent are as follows

pH:

The waste water may be either acidic or alkaline.

If acidic

  1. It may cause corrosion of pipeline.
  2. Can cause destruction of aquatic life

If alkaline

  1. It may cause adverse effect on aquatic life
  2. Incrustation in sewers and damage corps by impairing their growth

DISSOLVE SOLIDS:

The dissolve solid may be either organic or inorganic. The can cause reduction in dissolve oxygen in waste water, disease and discomfort, scale in pipelines and other equipments, accelerate algal growth, increase hardness of water and enhance metal corrosion

SUSPENDED SOLIDS:

Suspended solids increase

  1. Turbidity
  2. Interferes light transmitting property of water
  3. Destroy photosynthesis and oxygen transmission process
CriteriaAverage quality of textile effluentMinimum std required to drain
BOD300 mg/l20-40 mg/l
COD1000 mg/l120-160 mg/l
Suspended solid200 mg/l20-40 mg/l
Settle able solid0-5 mg/lNo traces
Ammonia20-30 mg/l4-8 mg/l
Phosphorus3-5 mg/l3-5 mg/l
Surfactant30-40 mg/l0.5-2 mg/l
Chloride1000-1500 mg/l1000-1500 mg/l
Sulphate1000-1500 mg/l1000-1500 mg/l
Oil and fats30-40 mg/l<5 mg/l
Phenol3-5 mg/l0.05 mg/l
colorcoloredNot perceptible

The Following standard is given by Bangladesh Department of Environment

Composite Textile Plant and large processing unit ( in which capital investment is more than thirty million taka)

ParametersStandard and presence in a unit of mg/l
pH6.5-9
Suspended Solid100
BOD5 20o C150
Oil and Grease10
Total dissolved solids2100
Wastewater flow100
Total Chromium as Cr2
Sulfide as S2
Phenolic Compounds as C6H5OH5

EFFLUENT TREATMENT AND DISPOSAL SYSTEM

In our country commercially Four-type process are available.

  1. Chemical process
  2. Biological process
  3. Chemical and biological combination process
  4. Chemical Biological and electro coagulation combined process

Typical operation involved in a ETP

CHEMICAL OXYGEN DEMAND-COD

This Means potential overall oxygen requirement of the waste water sample including oxidizable components not determined in the BOD analysis.

STEPBLANKSAMPLE
1Take 20 ml  DM Water in a conical flaskTake Sample in a conical flask as per dilution method
2Add pinch of  Mercury II SulfateAdd pinch of  Mercury II Sulfate

 

 

3Add  5 ml  Silver Sulfate -Sulfuric acid solutionAdd  5 ml  Silver Sulfate -Sulfuric acid solution
4Add 10 ml      Potassium  Dichromate solutionAdd 10 ml      Potassium  Dichromate solution
5Add  25 ml  Silver Sulfate -Sulfuric acid solutionAdd  25 ml  Silver Sulfate -Sulfuric acid solution
6Add glass beadsAdd glass beads

 

 

7Reflux for 2 hoursReflux for 2 hours

 

 

8cooling for 2 hourscooling for 2 hours

 

 

9Add 80 ml Distilled waterAdd 80 ml Distilled water

 

 

11Titrate with Ferrous Ammonium Sulfate

 

 

Titrate with Ferrous Ammonium Sulfate
 

 

12

 

 

TITRATION VALUE= A

 

 

TITRATION VALUE= B

 

DILUTION METHOD

EFFLUENTX-SAMPLE-MLDISTILLED WATER-ML
Collection Sump218
Clarifier Outlet515
UF permeate1010
RO 1 feed1010
RO 2 feed515
RO 3 feed515
RO reject218
Dye bath effluent119
NF permeate218

CHEMICAL OXYGEN DEMAND-COD

TITRATION

BURETT

0.1N ferrous ammonium sulfate

CONICAL FLASK

  • X ml of sample
  • 4-5 drops of Ferrion indicator

TITRATION

Sample Vs 0.1N ferrous ammonium sulfate

ENDPOINT

Bluish green to reddish brown

TITRATIONTitration  of  BlankTitration  of  Sample
Titration valueAB

CALCULATION OF COD -MG/LITRE

(A-B) X 0.1 X8 X1000

Xml OF SAMPLE

X -SAMPLE MLCALCULATION – MG/LT
1(A-B) X  800
2(A-B) X  400
5(A-B) X  160
10(A-B) X  80
15(A-B) X  53.33

BIOCHEMICAL OXYGEN DEMAND-BOD

Biochemical oxygen demand is the measure of the oxygen consuming capabilities of orange matter, water with high BOD indicates the presence of decomposing orange matter and subsequent high bacterial counts that degrade its quality and potential uses.

 

 

Solution A

 

 

Blank

 

 

Sample

 

Take 2 liter distilled waterTake 300ml A solution in BOD bottle without air make 2 sampleTake two sample without air, as per dilution method
Aerate 1 hourCheck initial DO in one sample =  B1Check initial DO in one sample=  S1
Add 2ml ferric chlorideAnother sample Keep in BOD incubator at 20’C For 5 daysAnother sample Keep in BOD incubator at 20’C For 5 days
Add 2ml magnesium sulfate20’C For 5 days

 

27’C For 3 days

 

20’C For 5 days

 

27’C For 3 days

Add 2ml calcium chlorideAfter 5 or 3 days check DOAfter 5 or 3 days check DO
Add 2ml phosphate buffer 

 

DO of the blank is    B2

 

 

DO of the blank is  S2

Add 2ml seed solution

 

 

DILUTION METHOD AND ITS FACTOR

 

 

EFFLUENT

 

 

SAMPLE-ML

 

 

SOLUTION – A

 

 

F

 

 

P

Raw effluent22980.9930.00667
Primary outlet52950.9830.01667
Secondary outlet102900.9670.03333
Ro 1 feed102900.9670.03333
Ro 2 feed52950.9830.01667
Ro 3 feed12990.9960.00333
 

 

TOTAL VOLUME = 300 ML

BIOCHEMICAL OXYGEN DEMAND-BOD

CALCULATION  

Blank solution do-sample do    =    (B1 – B2) – ((S1 – S2) F)

                         Dilution factor                                             P

F- Fraction of sample to total volume                  = 300 – sample ml / 300

P- Fraction of sample to total volume                  = Sample ml /300

BOD SAMPLES TAKEN PROCEDURE

S.NOBOD Range ( approx ) – mg/lVolume of sample – ml

 

 

10-7300
26-21100
312-4250
430-10520
560-21010
6120-4205
7300-10502
8600-21001
91200-42000.5
103000-105000.2
116000-210000.1
1212000-420000.05
1330000-1050000.02

DISSOLVED OXYGEN-DO

 

 

STEP

 

 

BOD BOTTLE

1Take 300ml SAMPLE in BOD bottle without air

 

 

2Add 2ml manganous sulfate

 

 

3Add 2ml alkali iodide, sodium azide solution

 

 

4Immediately fix the stopper

 

 

5Keep 10 min for settling

 

 

6Add 2ml conc. Sulfuric acid

 

 

7Shake well

 

 

8Transfer 200ml in conical flask

 

 

9Titrate with 0.025 N sodium thio sulfate

 

 

BURETTE

0.025 N Sodium thio sulfate solution

CONICAL FLASK

  • 200 sample
  • 4-5 drops of starch indicator

TITRATION

Sample Vs 0.025 N Sodium thio sulfate solution

ENDPOINT                      Disappearance of dark blue

CALCULATION

TITRATE VALUE X 0.025 X8 X1000  -ppm

200 ml OF SAMPLE

TITRATE VALUE X 1 – ppm

What is Acid Neutralizer for ETP ?

What is Acid Neutralizer for ETP ?

Acid Neutralizer

Neutralizing is used to achieve the correct results. It is used to increase the Bacteria growth in FBBR. It also used to increase the efficiency of Biological system. To reduce the current and electrode consumption in EC system

Equivalent Weight Of Chemical Compounds

S.NOCHEMICALMOL.FORMULAEQ.WEIGHTVALANCY
1Acetic  acidCH3COOH60.051
2Calcium bicarbonateCaHCO3  
3Calcium carbonateCaCO350 
4Calcium chlorideCaCl74.51
5Calcium hydroxideCa (OH)2362
6Citric acidC6 H11 O8  
7Di sodium salt of ethylene di amine

 

tetra acetic acid

( CH2)6 N2 ( COO)4 Na2186.122
8Erio chrome black – TC20 H12 N3 Na O7 S  
9Ferrous ammonium sulfateFeSO4 (NH4)2 SO4  
10Ferric chlorideFeCl263.52
11Ferrous sulfateFeSO4.7H2O1392
12Hexa methylene teramine( CH2)6N4  
13Hydrazinium sulfateN2H4.H2SO4  
14Hydrochloric acidHCl36.451
15hydrogen peroxideH2O2172
16Magnesium chlorideMgCl259.751
17Manganous sulfateMnSO4  
18Mercury II sulfateHg2SO4  
19MuroxideC8 H8 N6 O6  
20Nitric acidHNO3  
21Oxalic acidCOOH.COOH63.052
22Potassium chlorideKCl74.451
23Potassium chromateKCrO4  
24Potassium dichromateK2Cr2O449.046
25Potassium hydroxideKOH56.111
26Potassium iodideKI  
27Potassium permanganateKMnO431.65
28Silver nitrateAgNO31701
29Silver sulfateAg2SO4  
30Sodium azideNaN3  
31Sodium bi carbonateNaHCO3  
32Sodium carbonateNaCO3532
33Sodium chlorideNaCl58.451
34Sodium hydroxideNaOH40.011
35Sodium thio sulfateNa2S2O3. 5H2O248.21
36Sulfuric acidH2SO449.042

Molecular Weight Of Chemical Compounds for Acid Neutralizer

S.NOCHEMICALMOL. FORMULAMOLE. WT
1Acetic  acidCH3COOH60.05
2Calcium bi carbonateCaHCO3101
3Calcium carbonateCaCO3100
4Calcium chlorideCaCl75.45
5Calcium hydroxideCa(OH)2211
6Citric acidC6 H11 O872
7Di sodium salt of ethylene di amine( CH2N)2-(CH2COO)4-2H -2Na372.24
 tetra acetic acid
8Erio chrome black – TC20 H12 N3 Na O7 S461.38
9Ferrous ammonium sulfateFeSO4 (NH4)2 SO4392.13
10Ferric chlorideFeCl2127
11Ferrous sulfateFeSO4.7H2O278
12Hexa methylene teramine( CH2)6N4140.19
13Hydrazinium sulfateN2H4.H2SO4130.12
14Hydrochloric acidHCl36.45
15hydrogen peroxideH2O234
16Magnesium chlorideMgCl259.75
17Manganous sulfateMnSO4169.06
18Mercury II sulfateHg2SO4497.2
19MuroxideC8 H8 N6 O6284.18
20Nitric acidHNO363
21Oxalic acidCOOH.COOH126.1
22Potassium chlorideKCl74.45
23Potassium chromateKCrO4194.2
24Potassium dichromateK2Cr2O4294.2
25Potassium hydroxideKOH56.11
26Potassium iodideKI166
27Potassium permanganateKMnO4158
28Silver nitrateAgNO3170
29Silver sulfateAg2SO4311.8
30Sodium azideNaN365.01
31Sodium bi carbonateNaHCO384
32Sodium carbonateNaCO3106
33Sodium chlorideNaCl58.45
34Sodium hydroxideNaOH40.01
35Sodium thio sulfateNa2S2O3. 5H2O248.2
36Sulfuric acid for Acid NeutralizerH2SO498.08
What is Digital TDS Meter Online ?

What is Digital TDS Meter Online ?

Digital TDS Meter

  • Digital TDS Meter -Switch ON the instrument , wait till its warm up
  • Adjust the temperature setting knob to room temperature
  • Set the check value as 1 .000
  • Wash the electrode by DM water
  • Dip the electrode 3000 PPM TDS calibration solution.
  • Adjust the reading to 3000 by using calibration knob of digital tds meter online
  • Rotate the knob to cell constant
  • Note the cell constant reading of tds meter online
  • Before going to check the sample , cross check the cell constant
  • Using the range knob we can measure the sample.
  • Instrument in stand by time rotate the switch to check position
  • Prepare 3000 PPM solution weakly once using sodium chloride or KCl

Prepation Of 3000 Ppm Solution

  • Dry the Nacl or KCl AR grade in the oven at 105’C for 1 hr
  • Cool & Weigh accurately 3 gm and dissolved in 1000 ml of DM water
  • Check the 3000 PPM solution in evaporation method using oven
  • Conformed TDS value used to calibrate the instrument

Total Solids Determination -TS

  • Weigh the weight of china dish and note as W1-gm
  • Take 10 ml of sample in china dish
  • Set 102 ‘ C in oven and switch on the oven & recirculation fan
  • Kept the sample in the oven for 1½hours at 102 ‘ C
  • After 1½ hours take away the sample from oven and kept in desiccators
  • For ½ hour allow to cool room temperature of Digital tds meter
  • Note the final weight of china dish W2-gm
  • Calculate the weight of solid W =  W2 – W1

TOTAL SOLIDS =        weight of solid W x 1000 x1000    PPM

  • Volume of the sample

Total Dissolved Solids Determination-TDS

  • Weigh the weight of china dish and note as W1-gm
  • Take 50ml of sample in a clean beaker and filter this sample by using what man NO 1 filter paper.
  • Discord first 10 ml of filtrate, then collect the filtrate in the beaker
  • Take 10 ml of filtered sample in pre -weighed china dish
  • Set 102 ‘ C in oven and switch on the oven & recirculation fan
  • Kept the sample in the oven for 1½hours at 102 ‘ C
  • After 1½ hours take away the sample from oven and kept in desiccators
  • For ½ hour allow to cool room temperature
  • Note the final weight of china dish W2-gm
  • Calculate the weight of solid W =  W2 – W1

TOTAL DISSOLVED SOLIDS =        weight of solid W x 1000 x1000    PPM

Volume of the sample

Total  Suspended  Solids Determination -TSS 

TOTAL SUSPENDED SOLIDS TSS =   TS – TDS    ppm

Determination Of MLSS / TSS

  • Weigh the weight of What man 41 filter paper note as W1-gm
  • Take 25 ml of aeration sample in a measuring cylinder
  • Filter this sample by using what man 41 filter paper.
  • Take the filter paper carefully and placed in china dish
  • This sample Kept in the oven for 1½hours at 102 ‘ C
  • Set 102 ‘ C in oven and switch on the recalculating fan
  • After 1.5 hours take away the sample from oven and kept in desiccators
  • For ½ hour allow to cool room temperature
  • Note the final weight of filter paper W2-gm
  • Calculate the weight solid W =  W2 – W1

MLSS –  Mg/Lt                        =        weight of solid W x 1000 x1000

Volume of the sample

NOTE for Digital TDS Meter

Volume of sample is 100 ml

MLSS – Mixed liquor suspended solids

Determination Of Mlvss Using Muffle Furnace

  • Residues obtained in mixed liquor suspended solids, and note the weight of filter paper W2-gm.
  • Place the filter paper with residue in crucible
  • Ignite the residue  in muffle furnace for 1 hour at temperature of
  • 500-550’ c
  • After 1hour take away the sample from furnace  and kept in desiccators
  • For ½ hour allow to cool room temperature
  • Note the final weight  W3-gm
  • INNERT Mg/Lt =   W2 – W3 x 1000 x 1000

Volume of sample

MLVSS           =   MLSS – INNERT Mg/Lt

Conclusion

Digital TDS Meter -Volume of sample is 100 ml.  MLVSS – Mixed liquor Volatile suspended solids