10% FORMAL SALINE

1. Wear appropriate protective clothing eg. laboratory coat, gloves and goggles.
2. Weigh out 900g of sodium chloride and dissolve in warm water.
3. Unscrew cap on porthole of formalin mixing tank (beneath cut-up bench). Place a funnel in the front porthole of the formalin mixing tank and pour sodium chloride solution into the main tank. Replace screw cap on porthole.
4. Using the sealed pump attached to the formalin mixing tank , add 10 litres of formaldehyde to the main mixing tank.
5. Turn on the mains water tap (adjacent to the tank) and fill the formalin mixing tank to the 100 litre mark, using the line on the tank wall.
6. When mixed , using the sealed pump attached to the formalin mixing tank, pump 50 litres into the top tank where the solution is ready for use.
7. 10% formal-saline solution can be dispensed from the tap with the red knob on the cut-up bench.

NB: See protocol on formaldehyde safety and COSHH form for formaldehyde for the hazards associated with this chemical.

100 litres of 10% Formal Calcium

• 900g sodium chloride
• 10L formaldehyde
• 90L water