Anticoagulants and preservatives in containers

Available in bottles of 15 ml.
The dosage of one drop (15 ml = 300 drops) is enough for 5 ml of blood.
Both products have preservatives for stability.
Code 705000 composition: lithium heparin, phenylmercury acetate and distilled water.
Prepared according ISO 6710. Heparin concentration between 12 and 30 μI for each ml of blood.
Expiry date in 24 months.