Information: ScyTek's Stop Buffer (TSB) offers a unique combination of acid that produces a more stable stopped reaction product than other formulations of H2SO4 or HCL. Stopped reactions show increased absorbance values of approximately two-fold over unstopped reactions with minimal drift for up to six hours depending on various conditions. This reagent can be customized to meet each customers specific needs. Inquire about custom vialing, labeling, kit assembly and drop shipping.