NIOSH 5031

DYES, BENZIDINE-, o-TOLIDINE-, o-DIANISIDINE-

This test method uses HPLC (UV detection) techniques to monitor aspartame. A personal sampler is used in conjunction with a 2 piece 37-mm polystyrene 2-piece sampler cassette fitted with a 1 μm PTFE Filter (FALP or equivalent) and cellulose backup pad. After collection, the filters are removed with forceps and placed into liquid scintillation vials with eluent, incubated, and agitated. Using at least a 10cc syringe, filter extraction through a 13mm 0.45 μm PTFE Syringe filter such such as Millex® syringe prior to HPLC. Note: Work with suitable personal protective equipment since Phosphoric acid is extremely corrosive.

Analysis Type (Application Method): HPLC-UV

Link to NIOSH 5031 Method

Compatible Filters:

37 mm 1 μm PTFE polyethylene-backed membrane filter w/backup pad in cassette filter holder. Forceps to handle filter membrane.

Materials

     
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