2026MW07R1 Instruction sheet and result submission link

PT Round 2026MW07R1

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: 2026MW07R1 Matrix: Chiller, Cooling Tower, Water from Swimming Pools, Water from any other sources, Water from
purifier, Water from Industrial Purposes and Water from processed Food Industry Measurand: Legionella Result Submission: 30 March 2026 Storage: 2–8 °C until analysis

Revival Instructions

Vial 2026MW07R1-1

Aseptically uncap the vial and rehydrate with 5 ml sterile saline peptone water (0.1% Peptone + 0.85% NaCl).
Securely recap and allow 5 minutes rehydration at room temperature.
Transfer 1ml of rehydrated vial to 1000ml of sterile distilled water.
Homogenize thoroughly.
Perform routine analysis for: Legionella.

Vial 2026MW07R1-2

Aseptically uncap the vial and rehydrate with 5 ml sterile saline peptone water (0.1% Peptone + 0.85% NaCl).
Securely recap and allow 5 minutes rehydration at room temperature.
Trasnfer 1ml of rehydrated vial to 1000ml of sterile distilled water.
Homogenize thoroughly.
Perform routine analysis for: Legionella.

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: 2026MW07R1

Analytes to Report

For this PT round 2026MW07R1, you are required to report results for the following analytes:

Legionella

Reporting Basis: Per 1000ml

ISO 11731:2017 RA 2022 APHA 9268 24th edition

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: 2026MW07R1

Last Date for Result Submission: 30th March 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

Date of Result Reporting(Required)

As filled in the registration form

Name of Participating Laboratory/ Organization:(Required)

Phone(Required)

Please include the contact information for the person who will be available for day-to-day coordination.

Email(Required)

Please include the email information for the person who will be available for day-to-day coordination.

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)

For PT schemes providing two items for same measurand, participants are required to submit results for both. Submissions for only a single item will not be accepted and will be reported as ‘Result Not Considered’ (RNC) in the final report.

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)

Participants using any other equivalent methods are requested to get a written permission from PTP.

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