Standard field testing kits for Arsenic
Posted on July 25th, 2011

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The following standard kits are considered acceptable in most countries and can be ordered through UNICEF Supply Division, Copenhagen. This list does not imply that UNICEF endorses these kits only, or that UNICEF endorses the brand. UNICEF is open to consider any new kit that comes on the market and to share information and experience with partners. When new kits are accepted, they will be introduced into the UNICEF Supply Catalogue.

 1) 0005500 – Arsenic testing kit (liquid reagents)

The arsenic test is suitable for measuring arsenic in water, soil extracts,  pharmaceutical products, prepared biological specimens and liquid foods. Arsenic Test Method: colorimetric with test strips and reagents 0.02 – 0.05 – 0.1 – 0.2 – 0.5 mg/l As 0.1 – 0.5 – 1.0 – 1.7 – 3.0 mg/l As Merckoquant®

This kit is manufactured by Merck KGaA, Germany.

  • Manufacturer reference: Merckoquant®, Arsenic (sensitive), 1.17926.0001 As.
  • Measuring range (colour scale graduation): 0.01, 0.025, 0.05, 0.1, 0.5 mg/litre As III/V. This is equivalent to 10, 25, 50, 100, 500 ppb (parts per billion).
  • The kit does not allow for the removal of the sulphide interference.
  • The kit contains the following: two reagents (zinc powder and acid in liquid form supplied in two dropper bottles), test strips, reaction test tube with a slotted stopper, a 10ml. measuring syringe for the water sample, a measuring spoon for the zinc powder and an instruction sheet in four languages (English, French, Spanish and German).
  • Sufficient reagents and strips are provided to perform 100 tests.

Merck KGaA
Frankfurter Str. 250
64293 Darmstadt
Germany
Phone: +49 6151 72-0
Fax: +49 6151 72 2000

2) 0005510 – Arsenic testing kit (powdered reagents)http://www.wateraid.org/documents/microsoft_word__arsenic_2002_.pdf

This kit is manufactured by Hach Company, Colorado, USA.

  • Manufacturer reference: Arsenic test kit 28000-00.
  • Measuring range (colour scale graduation): 0.01, 0.03, 0.05, 0.07, 0.3, 0.5 mg/litre As III/V. This is equivalent to 10, 30, 50, 70, 300, 500 ppb.
  • All the reagents are packed in powdered form and four of these reagents are pre-measured and individually packed in single use powder pillows.
  • The kit contains the following: five reagents, test strips, two reaction vessels with special caps and instructions in English.
  • Sufficient reagents and strips are provided to perform 100 tests.
  • A replacement kit for reagents only is available (manufacturer ref. no. 27999-00).

3) 0005520 – Arsenic test kit, highly sensitive
 117927  Arsenic Test
Method: colorimetric with test strips and reagent 0.005 – 0.010 – 0.025 – 0.05 – 0.10 – 0.25 – 0.50 mg/l As Merckoquant®

This kit is manufactured by Merck KGaA, Germany.

  • Manufacturer reference: Merckoquant®, Arsenic (highly sensitive), 1.17927.0001 As.
  • Measuring range (colour scale graduation): 0, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5 mg/litre, which is equivalent to 0, 5, 10, 25, 50, 100, 250, 500 ppb.
  • An oxidizing agent is provided to remove the effect of sulphide interference.
  • The kit contains the following: two powdered reagents bottles, oxidizing agent in a dropper bottle, a reaction vessel with a special cap, two measuring spoons for the reagents and instructions in four languages (English, French, Spanish and German).
  • Sufficient reagents and strips are provided to perform 100 tests.

 

4) 0005521 – EZ Arsenic test kit

This kit is manufactured by Hach Company, Colorado, USA.

  • Manufacturer reference: EZ Arsenic test kit 28228-00.
  • An optional step is included to remove the interference of sulphide by scrubbing the gas stream through a cotton ball soaked with lead acetate 10%.
  • The two reagents are pre-measured and individually packed in single use powder pillows. The lead acetate is supplied in a dropper bottle.
  • Measuring range (colour scale graduation): 0, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5 mg/litre, which is equivalent to 0, 10, 25, 50, 100, 250, 500 ppb.
  • The kit contains the following: Two reagents, optional lead acetate and cotton, two reaction vessels with a special cap, a dilution tube, a waste disposal bag and instructions in English.
  • Sufficient reagents and strips are provided to perform 100 tests.
  • The manufacturer offers the same kit with instructions in both English and Bangla languages (ref. no. 28178-00)
  • A replacement kit for reagents only is available (manufacturer ref. no. 28232-00).

5) 0005522 – Visual Arsenic Detection Kit, 200

This kit is manufactured by Wagtech International Ltd. Berkshire, UK.

  • Manufacturer reference Wag-WT0950, Visual Arsenic Detection Pack-200
  • The kit features a reaction vessel with a unique tri-filter cap, which removes excess arsine gas as well as any hydrogen sulphide which may also be given off as a by-product of the reaction.
  • Measuring range (colour scale graduation): <10, 20-40, 50, 60-80, 100, 100-200, 200-300, 300-400, 400-500µg / litre (ppb).
  • The results can be compared visually with the colour scale or the filter holder inserted in the photometer of the digital Arsenator (UNICEF item no. 0005523) to get a digital readout of the results.
  • The kit contains the following: two reagents (one in tablet form and the other in pre-measured individually packed sachets), a reaction vessel, a dilution graduated tube, four filter holders for the collection and detection of arsenic, four filter holders (scrubber) for the elimination and removal of any arsine gas, four hydrogen sulphide filters, a colour comparison chart, and waste disposal bags.
  • Sufficient tablets, powder sachets and filters are provided to perform 200 tests.
  • A set of reagents and consumables to perform 200 additional tests is available (manufacturer ref. no. Wag-WT0940).

6) 0005523 – Digital Arsenator

This kit is manufactured by Wagtech International Ltd. Berkshire, UK.

  • Manufacturer reference: Wag-WT0900, Wagtech Digital Arsenator.
  • The Digital Arsenator is a fully portable arsenic detection system featuring a portable battery-operated digital photometer capable of giving accurate digital readings of the discolouration of the filters as a result of the reaction of the two reagents with the arsenic in water. It gives a direct readout in (ppb) of arsenic in water specifically within the critical range of 2 µg/ litre (ppb) to 100 µg/ litre (ppb). The photometer includes a timing device to monitor the length of the chemical reaction.
  • The kit contains the following: two reagents (one in tablet form and the other in pre-measured individually packed sachets), a digital photometer, a reaction vessel, a dilution graduated tube, five filter holders for the collection and detection of arsenic, five filter holders (scrubber) for the elimination and removal of any arsine gas, ten hydrogen sulphide filters, a colour comparison chart, waste disposal bags and a spare battery for the photometer.
  • Sufficient tablets, powder sachets and filters are provided to perform 420 tests.
  • A set of reagents and consumables to perform 200 additional tests is available (manufacturer ref. no. Wag-WT0940).
  • As an accessory for the Digital Arsenator, a multi-pack generator is available with enough reaction vessels and filter holders to enable five tests to be run simultaneously (manufacturer ref. no. Wag-WT0920, Arsenic Generator Multi-pack).

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