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| LEAD Action News
vol 6 no 2, 1998 ISSN 1324-6011 The journal of The LEAD (Lead Education and Abatement Design) Group Inc. |
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Lead Check Kits - Questions and Answers How do I milk Lead Check kits to get more than one test per vial? If you intend using the Lead Check kits it is possible to get more than one test out of each vial. Milking Lead Check kit: - the tester looks rather like a cigarette, a cardboard cylinder with a compressed paper plug at one end. Within the cylinder are 2 fine glass tubes containing chemicals. The instructions with the kit are to squeeze the cylinder gently to break the glass, and shake to mix the chemicals. They will then soak down through the "filter tip", then wipe the tester over the painted surface and if lead is present, a pink or red colouration will occur. However, this means that no other surface can be tested, although there is adequate chemical in the tester for more tests. Instead, we suggest that you get a supply of Cotton Buds (about 6 per tester) and gently "milk" the cylinder to soak the tip of a bud with chemical, then use it as a tester. The "filter tip" can be used last. It is important to have the desired paint surfaces to be tested ready before you start as the chemical deteriorates within two (2) minutes of the two components being mixed. Make sure you do the fail-safe check supplied with the kit. What are some of the pitfalls of incorrect sampling? A Cautionary Case study A man had his parents use Lead Check to test paint on the home he was about to renovate and later move into. The parents got a negative result. The man went ahead heat gunning and sanding for four days with the children occasionally coming over and playing in the dust. The man started feeling sick, his four and a half year old anaemic daughter threw-up and it occurred to the man that perhaps he should test the paint himself. The Lead Check went bright pink. The difference- the parents tested the top layers only, the man tested the bottom layer which dated from 1955 Where can I purchase Lead Check kits? Two-packs are available from some major hardware stores (phone to check if your local store stocks them) and from Pascol, Dulux or Wattyl trade centres (see attached lists or look up closest one in the yellow pages under Paints). Eight packs are available from: Air-Met Scientific - 55 President Ave Kogarah. Ph: 9553 0200. Fax: 9553 0255 Air-Met does import the 8 pack Lead Check kits. They are priced at $62.00 per pack plus tax $75.64 including tax and are available ex stock from the Melbourne warehouse. Are Lead Checks more reliable than other spot test kits? Lead Check kits are the only commercially available spot test kits in Australia. The company which manufactures Lead Check kits claims that when the US EPA tested the range of spot test kits available in the US, they found that Lead Check kits did not actually have any false negative results. However, the US EPA wrote their policy based on the results of testing the full range of spot kits. (see the attached 'Federal Lead testing technologies studies confirm existing policy') So the conclusion that spot tests have an unacceptable number of false positives and false negatives, may not relate to Lead Check kits. The Lead Advisory Service is currently seeking written confirmation from the manufacturer for the claim that Lead Checks do not give false negative results. |
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Updated 13 May 2010
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