Gardner Liquid Color Standards are color reference standards in the ASTM C40 and AASHTO T 21 test methods for the determination of organic impurities in fine aggregates. The standards are an alternate option for the Organic Impurities Test Set. Individual reference standards are available in five Gardner colors noted in the test method. The liquid is securely sealed in 0.47x4.6in (11.9x116mm) Dia.xH glass tubes marked with the Gardner number and packaged in a protective case. The shelf life of each color standard is five years.
HM-810 is the No. 5 liquid color standard.
HM-811 is the No. 8 liquid color standard.
HM-812 is the No. 11 liquid color standard.
HM-813 is the No. 14 liquid color standard.
HM-814 is the No. 16 liquid color standard.
HM-819 is the No. 18 liquid color standard.
- Liquid Gardner Color Scale reference standards for accurate visual comparison of test samples
- Standards available as required for organic impurities test of fine aggregates
- Five-year shelf life in sealed glass tubes
- Gardner Liquid Color Standard (No. 5, 8, 11, 14, 16, or 18)