常见问题

pH Determination of Low-Acyl Gellan Gum

1. Apparatus

pH meter, magnetic stirrer

2. Test Conditions

Stirring speed: 800 r/min

Measurement temperature: 25°C (room temperature)

3. Experimental Procedure

a. Measure 100g (accurate to 0.01g) of distilled water into a 250mL beaker.

b. Precisely weigh 0.5g of sample (accurate to 0.001g) using a clean, dry weighing paper, and slowly and evenly add the weighed sample into the beaker.

c. Place the beaker on the magnetic stirrer and stir for 1 hour.

d. Measure the pH value using a pH meter.