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Negative results are indicated by a blue/green color
A reaction will occur at up to one part per million of blood
Simply spray Photographic Fog before taking a photograph
A pack of 100 white7
Each tag has a metric scale on the bottom for easy sizing reference
Large Number Continuous Tape New Arrivals Negative results are indicated byThis non permanent adhesive tape has large numbers printed in a repeating 30. 5cm (12") pattern. Alternating black bands are printed on every other 30. 5cm (12") segment, providing an easy visual reference from a distance. Printed on a bright yellow, non glare stock, the tape is easy to photograph and can be removed from nearly any surface without damage.