Sigma-Aldrich
Guards for Sigma-Aldrich® pH electrodes
Hafnium carbide
Hamilton® Gastight® syringe, general use, 1700 series
Hamilton® Polilyte Lab Temp pH electrode
Hamilton® syringe
Haploside C
Hastelloy® B-3 alloy, Ni65Mo28.5Cr1.5Fe1.5(Co+Mn+W)3.5max
Hastelloy® C276-heat resisting alloy, Ni57Mo17Cr16FeWMn