实验方案（Protocols）
Paraformaldehyde (2%)
Paraformaldehyde (2%)
Recipe - To make 100ml of 2% Paraformaldehyde
1.Add 2 grams of paraformaldehyde to 48 ml of water
2.Heat to dissolve
3.Add NaOH dropwise until solution clears (10-20 drops of 2M)
4.Add 50ml of 2x PBS and mix
5.Remove from heat and place on ice
6.pH from 7.2 to 7.4
危险品化学品经营许可证（带存储）