BS EN 60993:2002

1 Scope
2 Object
3 Definitions
  3.1 Classification of impurities
  3.2 Filling electrolyte
  3.3 Operating electrolyte
  3.4 Replacement electrolyte
4 Preparation of the electrolyte
  4.1 Requirements of potassium hydroxide (KOH), solid
      and liquid, supplied for preparation of electrolytes
  4.2 Requirements of water used for topping up and
      preparation of electrolytes
  4.3 Requirements of solid lithium hydroxide (LiOH, H[2]O)
      used as an additive for preparation of electrolytes
5 Requirements for filling and replacements electrolyte
6 Physical and Chemical requirements of electrolyte
  6.1 Density of electrolyte
  6.2 Minimum and maximum values of electrolyte density
  6.3 Purity of the electrolyte
APPENDIX A
APPENDIX B

Applicable to electrolytes and their components when used in vented nickel-cadmium cells. These electrolytes are used: for filling cells supplied without filling electrolyte, and/or for refilling cells if change of electrolyte is required, and/or if the operating electrolyte needs to be topped up with water provided no specific recommendations from the manufacturer are available

IEC 60512-16-9:2008 details a standard test method to determine the holding capacity of grounding contact springs by means of gauges.