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US 9,310,310 B2Granted
Flowable dry powder composition
Assignee3M Innovative Properties Company
InventorJohn E. Gozum
Life of this patent
Estimating the term…
Abstract
A flowable dry powder composition comprising a mixture of diphenylcarbazide particles and glass bubbles; kits containing such compositions; methods of filling containers with such compositions; and, methods of using such compositions in the detecting of hexavalent chromium.
Claims18
A flowable dry powder composition comprising a mixture of diphenylcarbazide particles and hollow glass bubbles wherein at least 5% of the glass bubbles by weight are in the form of broken shards.
A kit for detecting hexavalent chromium, comprising:
- at least one disposable swab comprising a secondary container that contains:
- a breakable container containing a flowable dry powder composition comprising a mixture of diphenylcarbazide particles and hollow glass bubbles wherein at least 5% of the glass bubbles by weight are in the form of broken shards,
- and,
- a buffer solution.
1 more element
Dependencies are inferred from the claim text.