Calculation of Pro Polymer for Alcohol Gel Formulation

Based on your question about using Pro Polymer in an alcohol gel formulation and asking for the amount in grams based on a percentage of volume (mL), we will calculate assuming the percentage refers to weight per volume (g/100ml).

Pro Polymer (Acrylate Crosspolymer) is commonly used as a thickener.

Calculation Method:
To find the amount in grams when you have a percentage concentration (assuming g/100ml) and a total volume in ml, you can use the formula:
Amount (grams) = (Percentage / 100) * Total Volume (ml)

For your specific questions:

• If you want to use Pro Polymer at 0.5% in a total volume of 1000 ml:
  Amount (grams) = (0.5 / 100) * 1000 ml
  Amount (grams) = 0.005 * 1000
  Amount (grams) = 5 grams

• If you want to use Pro Polymer at 1% in a total volume of 1000 ml:
  Amount (grams) = (1 / 100) * 1000 ml
  Amount (grams) = 0.01 * 1000
  Amount (grams) = 10 grams

Please note that percentages in cosmetic formulations are typically expressed as weight by weight (w/w). However, based on your question specifying percentage of volume (mL) and asking for the amount in grams, this calculation assumes a weight per volume (w/v) basis (grams per 100 ml). If the percentage refers to weight by weight, you would need to know the total weight of the 1000 ml formulation (which requires knowing its density) to calculate the required amount of Pro Polymer.