Store is currently closed for a summer break, and will reopen 2nd July. Orders will ship when we return.

$5.00

Johnson Test Papers Comparator Paper pH 0.5 - 5.5, pH paper

Available as 1 reel (5m x 7mm).

Good for testing pyritic specimens for sulphuric acid to check if there has been any pyrite decay. Also good when doing acid preparation of specimens. 


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