Kód

Leírás

Kiszerelés

NIST-2950a

Respirable Alpha Quartz on Filter Media (Nominal Mass of Alpha Quartz 5 µg-500 µg)

30 filters plus 30 blanks

NIST-RM-8786

Filter blank for NIST-RM 8785

filter

NIST-RM-8785

Filter media - Air particulate matter

3 filters

BCR-553-4

Formaldehyde-2,4-dinitrophenyl-hydrazone on filter

set

BCR-545

Welding dust loaded on filter

ea

NIST-2960

Respirable cristobalite on filter media, 5 - 250

30 filters plus 30 blanks

NIST-2783

Air particulate on filter media - Trace elements

2 +2 blank (47 mm dia)

NIST-2681

Blank ashless filter - Trace elements

set (10)