2026MW01R4 Instruction sheet and result submission

PT Round 2026MW01R4

Step 1 of 5

Instructions to Participants

Please read carefully before starting analysis

Quick Safety & Handling

Only trained and authorized personnel should handle PT items.
Confirm sample integrity upon receipt; notify the PT Provider if damaged.
Record date of receipt and store under the specified conditions until analysis.
Initiate analysis within 48 hours of receipt.
Treat PT items like routine samples and use standard methods unless otherwise instructed.

Program Details

Program Code: 2026MW01R4 Matrix: Drinking Water, Packaged Drinking Water, Packaged Natural Mineral Water,
Water for Processed Food Industry, Water Purifier, Water for Medicinal Purposes Measurand: Total Coliform Bacteria & Escherichia coli Result Submission: 15 June 2026 Storage: 2–8 °C until analysis

Revival Instructions

Vial 2026MW01R4-1

Aseptically uncap the vial and rehydrate with 5 ml sterile saline peptone water (0.1% Peptone + 0.85% NaCl).
Securely recap and allow 15 minutes rehydration at room temperature.
Transfer 2ml of rehydrated vial to 500ml of sterile distilled water.
Homogenize thoroughly.
Perform routine analysis for: Total coliform Bacteria and E.coli.

Vial 2026MW01R4-2

Aseptically uncap the vial and rehydrate with 5 ml sterile saline peptone water (0.1% Peptone + 0.85% NaCl).
Securely recap and allow 15 minutes rehydration at room temperature.
Trasnfer 2ml of rehydrated vial to 500ml of sterile distilled water.
Homogenize thoroughly.
Perform routine analysis for: Total coliform Bacteria and E.coli.

Raw Data Submission Requirements

Upload clear photographs of plates for all analytes tested.
Upload photographs of biochemical tests performed.
Accepted formats: JPG, PNG, PDF | Max size: 5 MB each.

Reporting of Results

PT Round: 2026MW01R4

Analytes to Report

For this PT round 2026MW01R4, you are required to report results for the following analytes:

Total Coliform Bacteria

Reporting Basis: per 100ml

IS 1622:1981 IS 15185:2016

Escherichia coli

Reporting Basis: Per 100ml

IS 1622:1981 IS 15185:2016

Online submission only: Do not download/print this page. Use the Next button to proceed to result entry.

Key Instructions (Read before you begin)

Do NOT download or print this page — results must be entered and submitted online only.
Use the Next button at the bottom to go to the results entry section.
Double-check all entries before submission — changes may not be accepted after submission.
Retain all raw data and supporting records (e.g., plate photographs, biochemical results, calibration logs) as per ISO/IEC 17025.
Upload clear evidence where required — unclear/missing records may lead to disqualification.
Avoid collusion — responsibility lies entirely with the participant.
Click Submit once only — unsolicited re-submissions may result in only the first entry being considered.
If you cannot proceed, ensure all required fields are completed.
You will see a confirmation message upon successful submission.
Use the specified methods, or an equivalent validated method capable of required accuracy. Obtain prior written permission for deviations.
Results in inappropriate formats (e.g., “<”, “>”, or zero where not applicable) may not be considered.
Read and follow the PT Protocol carefully before starting analysis.

PT Result Submission

Program Code: 2026MW01R4

Last Date for Result Submission: 15th June 2026

Note: All fields are mandatory.

Before starting the analysis, please ensure you have read the handling and analysis instructions carefully.

Lab Code(Required)

Please enter a number from 0 to 50.

For lab code, refer to the sample forwarding letter sent along with the sample

Name of Participating Laboratory/ Organization:(Required)

Sample Code(Required)

Please enter a number from 0 to 30.

Please refer to the Forwarding letter for the sample code.

Date of Result Reporting(Required)

As filled in the registration form

Name(Required)

Designation(Required)

Phone(Required)

Email(Required)

Start Date of Analysis(Required)

End Date of Analysis(Required)

Section 1

Sample Vial(Required)

Please select the appropriate vial code

Measurand/Parameter(Required)

Please select the appropriate measurand

Participating ?(Required)

Results(Required)

Enter your results as “Present”, “Absent” only. Do not type numbers, “<”, “>” or “0”. Only required format is accepted.

Units of Measurement(Required)

Method Used(Required)

Media Used(Required)

Colony Characteristics(Required)

Incubation Conditions(Required)

e.g. 37 Degrees for 24 hrs

Biochemical Performed(Required)

Any Confirmatory/Biochemical Tests Performed and their results

Accredited as per ISO 17025 scope?(Required)

Section 2

Sample Vial(Required)

Please select the appropriate vial code

Measurand/Parameter(Required)

Please select the appropriate measurand

Participating ?(Required)

Results(Required)

Enter your results as “Present”, “Absent” only. Do not type numbers, “<”, “>” or “0”. Only required format is accepted.

Units of Measurement(Required)

Method Used(Required)

Media Used(Required)

Colony Charateristics(Required)

Incubation Conditions(Required)

e.g. 37 Degrees for 24 hrs

Biochemical Test(Required)

Any Confirmatory/Biochemical Tests Performed and their results

Accredited as per ISO 17025 scope?(Required)

Section 3

Sample Vial(Required)

Please select the appropriate vial code

Measurand/Parameter(Required)

Please select the appropriate measurand

Participating ?(Required)

Results(Required)

Enter your results as “Present”, “Absent” only. Do not type numbers, “<”, “>” or “0”. Only required format is accepted.

Units of Measurement(Required)

Method Used(Required)

Media Used(Required)

Colony Charateristics(Required)

Incubation Conditions(Required)

e.g. 37 Degrees for 24 hrs

Biochemical Test(Required)

Any Confirmatory/Biochemical Tests Performed and their results

Accredited as per ISO 17025 scope?(Required)

Section 4

Sample Vial(Required)

Please select the appropriate vial code

Measurand/Parameter(Required)

Please select the appropriate measurand

Participating ?(Required)

Results(Required)

Enter your results as “Present”, “Absent” only. Do not type numbers, “<”, “>” or “0”. Only required format is accepted.

Units of Measurement(Required)

Method Used(Required)

Media Used(Required)

Colony Charateristics(Required)

Incubation Conditions(Required)

e.g. 37 Degrees for 24 hrs

Biochemical Test(Required)

Any Confirmatory/Biochemical Tests Performed and their results

Accredited as per ISO 17025 scope?(Required)

Upload Raw Data(Required)

Max. file size: 512 MB.

Upload clear photographs of plates, positive tubes and biochemical tests performed for all measurand or parameter tested.

2026MW01R4 Instruction sheet and result submission

PT Round 2026MW01R4

Instructions to Participants

Quick Safety & Handling

Program Details

Revival Instructions

Vial 2026MW01R4-1

Vial 2026MW01R4-2

Raw Data Submission Requirements

Reporting of Results

Analytes to Report

Key Instructions (Read before you begin)

PT Result Submission

Section 1

Section 2

Section 3

Section 4

Organizations’ Details

Registered Office

Quick link

Partners