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20/30 Labs employ their own drivers, running routes across the country, to enable same-day collections.

20/30 Labs also hold a major account with TNT, giving us total coverage of the UK.  We track all out-going kits and in-coming samples.  Samples can be dropped into any of the 52 TNT depots across the UK, and/or dedicated drivers are able to collect samples from site.

Samples for microbiological analysis are time sensitive and have to be analysed within strict time limits, as dictated by the relevant standards and imposed by UKAS. Samples are returned to the laboratory on a priority service, before 8am the next day, so that testing can be carried out within the relevant time frames.

To further insure sample integrity and prevent potentially inaccurate results, sample temperature conditions must also be maintained during transit.  We pride ourselves on being one of the only laboratories that provide temperature validated shipping boxes to ensure the integrity of samples during transit.

By controlling both the temperature at which samples are transported and by limiting time between sampling and analysis, 20/30 Labs aim to provide customers with the most accurate and reliable results possible.

Sample Type Sample temperature to be maintained Maximum time period between sampling and testing
Legionella 6-18°C 48 hrs
Potable Waters*
(e.g. E.coli & Coliform/ Pour Plate)
2-8°C 24 hrs
Endoscopy Waters* 2-8°C 48 hrs
Environmental Mycobacteria* 2-8°C 48 hrs
Endotoxin* 2-8°C 48 hrs
Other microbiological samples 2-8°C Best practise = 48 hrs


*samples must be tested within 4 hours of sampling if unrefrigerated

Hospital Analysis

A vast suite of standard and specialist analyses are available. Read More

Potable Water Testing

A range of tests available as required by the MODW and HTM 04-01. Read More

Pseudomonas Aeruginosa

The detection and enumeration of Pseudomonas aeruginosa according to HTM 04-01 and the MODW. Read More

Legionella Testing

Accredited to ISO 11731-2:2008 to carry out detection and enumeration of Legionella. Read More

Get in Touch



If you would like to speak to someone regarding sample analysis, testing scope or advice, please do not hesitate to contact us:


Upcoming Events

  1. Basic Microbiology Study Day

    November 22 @ 11:00 am - 3:00 pm
  2. Basic Microbiology Study Day

    December 13 @ 11:00 am - 3:00 pm