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Operating Case

Enter your system parameters. Results update automatically.

Total loop volume. Do not know it? Measure it in the System Volume Calculator.
gal

Total loop volume. Do not know it? Measure it in the System Volume Calculator.

InhibitorNitrite for most closed loops; molybdate where nitrite is unwelcome. Custom takes a plain ppm active with no basis conversion.
Product to add2.4 gal 25.0 lb

Program target. Nitrite programs commonly run 600 to 1,200 ppm as NO₂ (higher with glycol); molybdate 100 to 300 ppm as MoO₄. Use your supplier's number.
ppm
Present reading, on the same basis as the target. 0 for a fresh fill.
ppm

Same basis as the target, as NO₂. 0 for a fresh fill.

From the SDS or the label.
%

From the SDS. Water is 8.34 lb/gal, and most inhibitors are heavier.
lb/gal
If the loop leaks or takes makeup, inhibitor is lost proportionally. Enter it to get a maintenance dose.
gal/day

gal/day. 0 for a tight loop.

Glycol in the LoopGlycol loops commonly carry higher nitrite targets and need pH and azole attention.

Adjusting glycol too? Glycol Dosage.

Click on any stream to learn more.

Inhibitor Dose Against a Known Volume

All quantities are live and update with your inputs.

Operating Conditions
Loop
1,000 gal
Inhibitor
Nitrite
Target
800 ppm NO₂
Product
40% NaNO₂
Density
10.5 lb/gal
Makeup
none

Key Results

Primary outputs and operational context based on your inputs.

800 ppm as NO₂ = 1,200 ppm as NaNO₂; the product is 40% NaNO₂ = 26.7% as NO₂.

Product to Add Pounds of active over the label's percent, then over the density: the gallons that get pumped.

2.4 gal

25.0 lb of product

Add 2.4 gal (25.0 lb) of product to raise nitrite from 0 to 800 ppm as NO₂.

Active Needed The mass balance's answer before any product exists, at 8.34 lb per gallon of water.

10.0 lb NaNO₂

6.7 lb as NO₂

1,000 gal × 8.34 × 1,200 ppm.

Basis Check The conversion actually applied between the kit's basis and the label's.

800 ppm NO₂

= 1,200 ppm NaNO₂

Product 40% NaNO₂ = 26.7% NO₂.

Maintenance Dose The target concentration fed into the makeup, day after day.

0 gal/day

no makeup entered

Enter a makeup or loss rate to price holding the target.

Loop Turnover How long the makeup takes to replace the whole loop. A leak meter.

none

a tight loop

A closed loop should never turn over; makeup is a leak meter.

Product Price Delivered price of the product per gallon.
$
per gal
Dose Cost$47.65

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