New ranges of Quantiofix peroxide test strips

Peracetic acid is a popular disinfectant. It is used for example by beverage manufacturers for cleaning bottles and containers and in dialysis centers to clean machines.

Quantofix Peroxide

After disinfection, careful rinsing is necessary. Quantofix Peracetic acid test strips allows the quick and easy check of rinse water.

These simple to use test strips have always been available in 0-25, 0-100 and 0-1000mg/l Machery Nagel have now added 0-50, 0-500 and 0-2000mg/l to this range. All Quantofix are available from Camlab in the UK with our usual quick turnaround and expert technical advice.

See the link for Quantofix ordering information, up to date prices and stock availability from Camlab.

The product has also been recently inproved, previously the peroxide test had to be kept cool in a refridgerator, all current versions can be stored at room temperature with a shelf life of  2.5 years.

How do I counter heavy metal interference in the Quantofix Iron Test?

We have been using Quantofix Iron indicator papers Ref MN/913.02.  By running spiked samples the results have been lower than expected due to discolouration of the indicatior sticks probably caused by the prssence of heavy metals. The instructions state that this can be eliminated by the addition of cadmium powder. Please could you advice on what source of cadmium powder is required as the instruction does not detail specifics i.e grade and quality.

Any laboratory grade cadmium powder will work for this interference

Does the Hach Total Iron test detect rust?

When analysing water samples for Iron content there are a large number of forms the iron can take, from conventional dissolved Iron Salts such as Iron Chloride  to particles of Rust and Magnetite.

Does the Hach Iron test kit pick up all of this Iron or just the soluble Iron content?

Used in the standard mode the insoluble Iron particles will not be detected,. However there is an additional digestion step which can be performed to measure all of the iron in the sample.