How do you make a 20 mM PBS buffer?

How do you make a 20 mM PBS buffer?

But to prepare 100 ml, divide the mass concentrations by 10, to give 0.1945 g/dm3 and 0.099 g/dm3 for acid and base respectively. Finally, to prepare 100mls of 20mM potassium phosphate buffer pH 6.8, Weight the respective grammes of acid and salt in a beaker, and measure 100 ml of distilled water to dissolve it.

How do you make a 7.4 phosphate buffer?

Saline pH 7.4, Phosphate-buffered: Dissolve 2.38 g of disodium hydrogen phosphate, 0.19 g of potassium dihydrogen phosphate and 8.0 g of sodium chloride in sufficient water to produce 1000 ml. Adjust the pH, if necessary.

What is PBS solution made of?

Description. PBS (phosphate buffered saline) is a pH-adjusted blend of ultrapure-grade phosphate buffers and saline solutions which, when diluted to a 1X working concentration, contains 137 mM NaCl, 2.7 mM KCl, 8 mM Na2HPO4, and 2 mM KH2PO4.

How do you make a 10X PBS solution?

To make 1 L of 10X PBS stock solution, combine 17.8 g of Na2HPO4, 2.4 g of KH2PO4, 80 g of NaCl, 2 g of KCl, and adjust final volume to 1 L. This recipe calculator enables the accurate preparation of 10X PBS for any millimeter volume.

How to prepare 1x, pH 7.4 PBS?

Table 1. Required components Prepare 800 mL of distilled water in a suitable container. Add 8 g of NaCl to the solution. Add 200 mg of KCl to the solution. Add 1.44 g of Na 2 HPO 4 to the solution. Add 240 mg of KH 2 PO 4 to the solution. Adjust solution to desired pH (typically pH ≈ 7.4). Add distilled water until volume is 1 L.

How to prepare phosphate buffered saline for PBS?

For 1 liter of 1X PBS, prepare as follows: Start with 800 ml of distilled water: Add 8 g of NaCl. Add 0.2 g of KCl. Add 1.44 g of Na 2 HPO 4. Add 0.24 g of KH 2 PO 4. Adjust the pH to 7.4 with HCl.

How much Kh 2 Po 4 to make PBS?

Add 240 mg of KH 2 PO 4 to the solution. Adjust solution to desired pH (typically pH ≈ 7.4). Add distilled water until volume is 1 L.

How to prepare 1 L of PBS for CSH?

To prepare 1 L of either 1× or 10× PBS, dissolve the reagents listed above in 800 mL of H 2 O. Adjust the pH to 7.4 (or 7.2, if required) with HCl, and then add H 2 O to 1 L. Dispense the solution into aliquots and sterilize them by autoclaving for 20 min at 15 psi (1.05 kg/cm 2) on liquid cycle or by filter sterilization.