Dilution Calculator
Enter your system volume and target freeze protection. We’ll calculate the exact PG concentration, quantity, and cost for your application.
gallons
Freeze & Burst Protection Curve
Freeze Point
Burst Point
Your Target
Burst Point
Your Target
Your Calculation
Recommended PG %
36%
Actual Freeze Prot.
-3°F
Concentrate Needed
180gal
DI Water Needed
320gal
100% Concentrate — Industrial
4 × 55-gal drums
$3,060
$3,060
180 gal needed → 4 drums × $765 ea. = $13.91/gal
🚚 Shipping Estimate
Freight (4 drums, 1 pallet)$250
+$25
+$75
Product subtotal$3,060
Shipping$250
Estimated Total$3,310
⚠️
Use DI water only for dilution. Never tap water (degrades inhibitors) or RO water (too corrosive).
Use DI water only for dilution. Never tap water (degrades inhibitors) or RO water (too corrosive).
📦 Ships same-day from Granite City, IL · Flat-rate freight nationwide
Quick Reference: PG Concentration by Freeze Protection
| PG % | Freeze Point | Burst Point | Boiling Point | Specific Gravity | |
|---|---|---|---|---|---|
| 25% | +15°F | +1°F | 214°F | 1.025 | |
| 30% | +9°F | −18°F | 216°F | 1.030 | |
| 40% | −6°F | <−60°F | 219°F | 1.040 | |
| 50% | −28°F | <−60°F | 222°F | 1.048 | |
| 60% | −60°F | <−60°F | 225°F | 1.055 |