BS 4258 discusses phosphoric acid for industrial use. BS 4258-8 is the eighth part of the BS 4258 multi-series and discusses the determination of calcium content.
BS 4258-8 is applicable to products having a calcium content higher than 50 mg/kg but, by preparation of a suitable calibration graph, the range can be extended down to 10 mg/kg.
BS 4258-8 on the determination of the calcium content of phosphoric acid for industrial use (including foodstuffs) is useful for:
Phosphoric acid (PA) is an important industrial chemical used as an intermediate in the fertilizer industry, for metal surface treatment in the metallurgical industry, and as an additive in the food industry.
BS 4258-8 provides you with the flame atomic absorption method for the determination of the calcium content of phosphoric acid for industrial use (including foodstuffs). BS 4258-8 provides you with the reagents and apparatus required for the test method.
BS 4258-8 guides you with the procedure and expression of the test method. BS 4258-8 helps you to manufacture high-quality phosphoric acid.