$48.49
Features:
Details: Highly durable plastic liquid nitrogen ruler specifically made for liquid nitrogen. Everyone that owns a semen tank SHOULD own one of these! These solve a LOT of headache and questions on the level of nitrogen in your tank. They measure 50cm and will work in 99.9% of semen tanks. Check out our YouTube channel on the correct way to measure your nitrogen level at Unlimited Genetics Inc. (measuring nitrogen level in semen tank).
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