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ECHA Microbiology, SIG Rapide WB, Microbial Presence Test Kits
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ECHA Microbiology, SIG Rapide WB, Microbial Presence Test Kits


The Sig Rapid WB™ test is design to detect the levels of microbes typically found in water associated with fuel and is not designed to test fuel directly. To test a fuel phase sample directly please use the MicrobMonitor2 test.

Microbial proliferation cannot occur in fuel without the presence of some free water. The microbes first develop in this water and later spread into the fuel. Few fuel systems with water associated with them are completely free of micro-organisms but the level of sensitivity of the test is such that normal and acceptable levels of microbial contamination are not detected. A positive result in the test indicates an abnormal level of microbial contamination in the water tested and by implication strongly suggests unacceptable microbial proliferation in some of the fuel/water system sampled. Conversely a negative result in the test strongly suggests that the fuel/water system sampled will be unlikely to be operationally affected by microbial spoilage. Microbes in large volumes of fuel tend to settle towards the bottom water and are detectable by the Sig Rapid WB™ test. Upper fuel may then not be heavily infected, however, movements of fuel will probably disturb and redistribute bottom contamination.

The Sig Rapid WB™ test is designed to detect microbial contamination in water phase when active proliferation has begun. It is not designed to detect the normal background levels of microbes present in water associated with fuel. Therefore it will not give a strong positive result if microbes are not actively multiplying and growing on the fuel which the water is associated with.

The shelf Life of the test is 6 to 12 months dependant on storage conditions.  12 months when stored frozen, 6 months when stored in a cool dark room or refrigerated.

The Sig Rapid WB™ test can be used to test;

  • Fuel tank water bottoms
  • Product in shore tanks before loading on ships
  • Compartment bottoms in a loaded tanker prior to discharge
  • Stored product in tank farms
  • Garage forecourt automotive diesel tanks
  • Private diesel/gas oil/heating oil tanks
  • Road tankers
  • Ships bunkers (storage tanks, day/service tanks)
  • Standby generator fuel tanks
  • Drain samples from tanks, filters, centrifuges and coalescers
  • Slops/slime in empty ships or shore tanks before they are used for product

Product Features:

  • Quick, easy and safe to use
  • Results available after 1 hour @ 35c
  • Simple to read results
  • Results are semi-quantitative and give an indication of the severity of an infection
  • Cost effective method of monitoring for microbial contamination in water associated with fuel
  • An enzyme based test kit, which is much faster than culture test methods
  • A small incubator can be used to incubate the tests. The test is so small that individual tests can be incubated in a pocket close to your body.

Sig Rapid WB™ enables rapid testing of water associated with fuel. Providing reliable results and indicating the presence of microbial contamination.

The test utilizes the enzymes that the microbes produce to indicate their presence. The enzyme causes a colour change within the test within 1 hour.

Sig Rapide WB™ is a semi-quantitative test which indicates the level of microbial contamination present in water associated with fuel.

The test detects the enzyme produced by a wide range of microbes when growing in a fuel tank environment. The test can rapidly indicate when a microbial contamination problem is present in the water associated with fuel.

Download SIG Rapide WB - Instruction Leaflet PDFDownload SIG Rapide WB - Instruction Leaflet PDF

Download SIG Rapide WB - MSDS PDFDownload SIG Rapide WB - MSDS PDF

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Product CodeECH3AOLD46

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