Preparation of standard sulfide

Preparation of standard sulfide

  • CN 1,107,867 C
  • Filed: 06/11/1997
  • Issued: 05/07/2003
  • Est. Priority Date: 06/11/1997
  • Status: Active Grant
First Claim
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1. A kind of preparation method of standard sulfide is with washing down the outer Na that carries impurity, blots outer year moisture 2S9H 2The preparation of O crystal, tap water is made distilled water with water still, with the yin and yang resin ion-exchanger distilled water is made deionized water again, it is characterized in that, deionized water is sub-packed in container is built in the high-pressure sterilizing pot, at 121~

  • 130 ℃

    of temperature, 1.1~

    1.3Kg/cm 2The pressurize sterilization is after 25~

    38 minutes under the pressure, and cooling makes no ion sterilized water, according to compound concentration and volume, accurately takes by weighing and wash down outer year impurity, blots the outer Na that carries moisture 2S9H 2The expense of O crystal can make standard sulfide with sterile deionized water with the volume that its dissolving is settled to required preparation.

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