Is this the same product as pyridine(60%)-Barbituric Acid (6%) in 6% HCI? If so what is the shelf life?

The pyridine content of this reagent is 30%, the barbituric acid and HCl are both 6%. It matches the reagent given for the determination of cyanide as found in SM4500-CN E. It has a shelf life of 2 months.

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