Disposable Single-Use Tweezers, Pack of 10 Individually Sealed Weight|8oz 5") and contains: Bi-Chromatic Powder

5") and contains: Bi-Chromatic Powder

but leave no discoloration or residue on the fingers

easy-to-read markings and numbers on a non-glare surface for easy photography

Negative results are indicated by a blue/green color

Disposable Single-Use Tweezers, Pack of 10 Individually Sealed Weight|8oz 5") and contains: Bi-Chromatic PowderNickel plated tweezers can be cleaned in alcohol, solvents or autoclaved. It is important not to use metal tweezers when processing with Physical Developer. These disposable polystyrene tweezers are a package of 10 in single use hermetically sealed packages . Be aware that some solvents used in mixing DFO or Ninhydrin may damage polystyrene tweezers.