2025MW02R2 Instruction sheet and Result Submission

PT Round 2025MW02R2

Step 1 of 6

Instructions to Participants

Please read carefully before starting analysis

Quick Safety & Handling

Only trained and authorized personnel should handle PT items.
On receiving the PT item/sample, check that it is intact. If there is any issue, inform the PTP immediately. Record this in the sample receipt acknowledgement link shared by email and submit it within two days of receipt.
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.
Read the detailed instructions/information and follow them accordingly.
Open PT containers only when you begin the analysis.

Program Details

Program Code: 2025MW02R2 Category: Packaged Drinking Water/Packaged Natural Mineral Water Measurand: Salmonella, Shigella, Staphylococcus aureus, Pseudomonas aeruginosa, Faecal
streptococci and Yeast and Mould
Result Submission: 15 January 2026 Storage: 2–8 °C until analysis

Revival Instructions for Vials

Vial 2025MW02R2-V1

Uncap the sample vial 2025MW02R2-V1 aseptically and rehydrate using 4ml sterile saline peptone water (0.1% peptone with 0.85% NaCl).
Securely recap and allow 5 minutes rehydration at room temperature.
Empty the rehydrated vial content into 500 ml of sterile distilled water, ensuring thorough homogenization of the sample.
Treat this as your sample and carry out analysis for the presence or absence of Salmonella and Shigella.
Submit the results as Per 250 ml only.

Vial 2025MW02R2-V2

Uncap the sample vial 2025MW02R2-V2 aseptically and rehydrate using 4ml sterile saline peptone water (0.1% peptone with 0.85% NaCl).
Securely recap and allow 5 minutes rehydration at room temperature.
Empty the rehydrated vial content into 500 ml of sterile distilled water ensuring thorough homogenization of the sample.
Treat this as your sample and carry out analysis for Pseudomonas aeruginosa and Staphylococcus aureus.
Submit the results as Per 250 ml only.

Vial 2025MW02R2-V3

Uncap the sample vial 2025MW02R2-V3 aseptically and rehydrate using 4ml sterile saline peptone water (0.1% peptone with 0.85% NaCl).
Securely recap and allow 5 minutes rehydration at room temperature.
Empty the rehydrated vial content into 500 ml of sterile distilled water ensuring thorough homogenization of the sample.
Treat this as your sample and carry out analysis for Faecal streptococci and Yeast and Mould.
Submit the results as Per 250 ml only.

Raw Data Submission

Clear photographs of all plates (before counting, with readable labelling).
Photographs of all biochemical / confirmation tests performed (if applicable).
Accepted formats: PDF | Max size: 5 MB each.
Ensure photos are clear, in focus, and labelled with sample code, date and dilution (if used).

Note: Ensure images are in focus and labeled with sample ID, dilution, and date.

Reporting of Results

PT Round: 2025MW02R2

Analytes to Report

For this PT round 2025MW02R2, you are required to report results for the following analytes:

Salmonella

Reporting Basis: Per 250ml

IS 15187:2016

Shigella

Reporting Basis: Per 250ml

IS 5887: Part 7:1999

Staphylococcus aureus

Reporting Basis: Per 250 ml

IS 5887: Part 2: 1976

Pseudomonas aeruginosa

Reporting Basis: Per 250 ml

Annex D of IS 13428

Yeast & Mould

Reporting Basis: Per 250 ml

IS 16069 (Part 1):2013

Faecal streptococci

Reporting Basis: Per 250 ml

IS 15186: 2002

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 Final 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., “less than”, “More than”, or zero where not applicable) may not be considered.
Read and follow the PT Protocol carefully before starting analysis.

PT Result Submission

Program Code: 2025MW02R2

Last Date for Result Submission: 15th January 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 15.

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

Name of Participating Laboratory/ Organization:(Required)

Sample Code(Required)

Refer to the sample forwarding letter sent along with the sample

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)

Units of Measurement(Required)

Method Used(Required)

Media Used(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)

Units of Measurement(Required)

Method Used(Required)

Media Used(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 3

Sample Vial(Required)

Measurand(Required)

Participating?(Required)

Results(Required)

Unit of Measurement(Required)

Method Used(Required)

Media Used(Required)

Incubation Conditions(Required)

Biochemicals Performed(Required)

Accredited as per ISO 17025 scope?(Required)

Section 4

Sample Vial(Required)

Measurand(Required)

Participating?(Required)

Results(Required)

Unit of Measurement(Required)

Method Used(Required)

Media Used(Required)

Incubation Conditions(Required)

Biochemicals Performed(Required)

Accredited as per ISO 17025 scope?(Required)

Section 5

Sample Vial(Required)

Measurand(Required)

Participating ?(Required)

Results(Required)

Unit of Measurement(Required)

Method Used(Required)

Media Used(Required)

Incubation Conditions(Required)

Biochemicals Performed(Required)

Accredited as per ISO 17025 scope?(Required)

Section 6

Sample Vial(Required)

Measurand(Required)

Participating?(Required)

Results(Required)

Unit of Measurement(Required)

Method Used(Required)

Media Used(Required)

Incubation Conditions(Required)

Biochemicals Performed(Required)

Accredited as per ISO 17025 scope?(Required)

2025MW02R2 Instruction sheet and Result Submission

PT Round 2025MW02R2

Instructions to Participants

Quick Safety & Handling

Program Details

Revival Instructions for Vials

Vial 2025MW02R2-V1

Vial 2025MW02R2-V2

Vial 2025MW02R2-V3

Raw Data Submission

Reporting of Results

Analytes to Report

Key Instructions (Read before you begin)

PT Result Submission

Section 1

Section 2

Section 3

Section 4

Section 5

Section 6

Organizations’ Details

Registered Office

Quick link

Partners