======Potassium examination procedure======
  *Learn operation of [[Erba XL-640]] and [[Erbachem]]. 
  *Select equipment
    *Use Erba XL-640 as peferred equipment.
    *If Erba XL-640 is malfunctioning and can not be repaired within period acceptable to clinicians, use Erbachem and follow [[procedure for responding to Erba XL-640 failure]]
  *Read following documents
  

^references|{{erba_electrolyte_pack.pdf|K+ Reference literature 1}}|

^**environmental and safety controls**|{{MSDS-sodium-chloride.pdf|MSDS of sodium chloride}}|
| |{{msds_Potassium chloride.pdf|MSDS of Potassium chloride}}|
| |{{msds_Lithium carbonate.pdf|MSDS of Lithium carbonate}}| 
**Preparation of [[Electrolyte reagent]]**\\ 

 
**Preparation of Aliquots**
  - Write sample id on ependroff cups with permanent marker pen on the rough surface of ependroff cup.
  - Arrange them in ascending order in the rack.
  - Aspirate serum from the centrifuged vacutte with the help of 200 uL pipette.
  - Dispense the serum into the respective sample id ependroff cup.
  - Recap the ependroff cup as soon as possible after dispensing serum.
  - Put ependroff cups with cap in refrigerator(2-8 ') if analysis is delayed.