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Table 1 The properties of the solutions utilized to prepare the ballistics gelatin, including the buffer pH and the pH of the solid ballistics gelatin and the gelatin in buffer

From: Factors affecting use of ballistics gelatin in laboratory studies of bacterial contamination in projectile wounds

Solution

pH buffer

pH gelatin

pH buffer/gelatin

Buffer composition

RO water

4.6

4.8

N/A

N/A

PBS

7.0

4.8

6.5

137 mmol/L NaCl, 2.7 mmol/L KCl, 10 mmol/L Na2HPO4, 1,8 mmol/L KH2PO4

M9

7.0

6.5

7.0

22 mmol/L KH2PO4, 42 mmol/L Na2HPO4, 86 mmol/L NaCl

M63

7.0

6.5

N/A

100 mmol/L KH2PO4, 15 mmol/L (NH4)2SO4, 1 mmol/L MgSO4, 1.7 μmol/L FeSO4

Sodium phosphate pH 8

8.0

7.3

7.8

93 mmol/L Na2HPO4, 7 mmol/L NaH2PO4,

  1. N/A. not available RO water. Reverse osmosis; PBS. Phosphate-buffered saline