FID Test Mix - 20ug/mL Back Catalog number: 98138 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended H0081 Hexadecyltrimethylammonium Bromide, >98%, 25g Price on request 685213 4-Methylumbelliferone, 100mg Price on request 92809 EPA Method 8240A Mix #3 Price on request