Concentrate
1.94 oz
Water
30.06 oz
Ratio
1:16
Mix Recipe (1:16)
1.94 oz
concentrate + 30.06 oz water
Tablespoons
3.9
Teaspoons
11.6
Ratio
1:16
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Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Inputs
Result
V1 = (0.5 × 32) / 8.25 = 1.94 oz concentrate. Water = 32 - 1.94 = 30.06 oz. Ratio = 30.06 / 1.94 = 1:15.
Inputs
Result
V1 = (70 × 32) / 91 = 24.62 oz alcohol. Water = 32 - 24.62 = 7.38 oz.
Standard household bleach (8.25% sodium hypochlorite) diluted to 0.5% makes an effective sanitizer. For a 32 oz spray bottle: mix 2 oz (4 tablespoons) bleach with 30 oz water. This gives a 1:15 ratio suitable for kitchen and bathroom surfaces.
| Use | Target % | Bleach per 32 oz | Ratio |
|---|---|---|---|
| General sanitizing | 0.5% | 2 oz (4 tbsp) | 1:15 |
| Food surfaces | 0.01% | 0.04 oz (1/4 tsp) | 1:800 |
| Mold treatment | 1% | 4 oz (8 tbsp) | 1:7 |
| Laundry boost | 0.25% | 1 oz (2 tbsp) | 1:31 |
The dilution formula is C1×V1 = C2×V2, where C1 is the source concentration, V1 is the concentrate volume needed, C2 is the target concentration, and V2 is the total final volume. Solve for V1: V1 = (C2 × V2) / C1.
91% isopropyl alcohol should be diluted to 70% for optimal disinfecting. For 32 oz at 70%: mix 24.6 oz of 91% alcohol with 7.4 oz water. The 70% concentration is actually more effective than 91% because water helps denature proteins.
Most diluted solutions lose effectiveness over time. Bleach solutions degrade within 24 hours. Diluted hydrogen peroxide lasts 1–2 weeks in a dark container. Vinegar solutions are stable for months. Always label containers with the dilution date.
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Last Updated: Jul 24, 2026
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