Feed conductivity minus product conductivity divided by feed conductivity times 100 is the formula for calculating

Feed conductivity minus product conductivity divided by feed conductivity times 100 is the formula for calculating

• A. Percent resistivity
• B. Conductivity ratio
• C. Dialysate mismatch
• D. Filtration fraction

Answer: (A)

The main idea is measuring how much the ionic content, reflected by conductivity, changes from the incoming feed to the product, expressed as a percentage. The expression (feed conductivity − product conductivity) ÷ feed conductivity × 100 gives the percent decrease in conductivity from feed to product. In this context, that change is often described as percent resistivity, since resistivity is the reciprocal of conductivity and the calculation mirrors how much the solution’s ability to conduct electricity has changed as it passes through the system. The other concepts don’t fit this exact calculation: a conductivity ratio would be a simple product-to-feed ratio (not a percent change), dialysate mismatch is a broader idea not expressed as a percent change, and filtration fraction relates to ultrafiltration, not conductivity changes between feed and product.

The main idea is measuring how much the ionic content, reflected by conductivity, changes from the incoming feed to the product, expressed as a percentage. The expression (feed conductivity − product conductivity) ÷ feed conductivity × 100 gives the percent decrease in conductivity from feed to product. In this context, that change is often described as percent resistivity, since resistivity is the reciprocal of conductivity and the calculation mirrors how much the solution’s ability to conduct electricity has changed as it passes through the system. The other concepts don’t fit this exact calculation: a conductivity ratio would be a simple product-to-feed ratio (not a percent change), dialysate mismatch is a broader idea not expressed as a percent change, and filtration fraction relates to ultrafiltration, not conductivity changes between feed and product.