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Chlorine Dioxide Dosing Calculator
Calculate ClO₂ solution concentrations, water treatment dosages, and surface disinfection requirements
📊 1. Prepare Concentrated ClO₂ Solution
Calculate the concentration (ppm) when dissolving SuperTab tablets in water
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Solution Concentration (mg/L or ppm)
💧 2. Water Basin / Pool Dosing
Calculate how much of your prepared solution to add to a water body
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Required Solution Volume (mL)
| Application | Target ppm | Dose for 10,000 gal (mL) |
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🧼 3. Surface Disinfection & Cleaning
Calculate how much water to add to achieve desired concentration for surface cleaning
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Water to add per tablet
0 mL
Solution per liter of final mix
Calculate ClO₂ dosage accurately — free, no signup, US gallons supported
Chlorine Dioxide Dosing Calculation
Chlorine dioxide (ClO₂) is a powerful oxidizing agent used for water treatment, surface disinfection, and industrial applications. Proper dosing is critical for effective results and safety.
⚠️ Safety Note: Chlorine dioxide is a potent oxidizer. Always follow manufacturer guidelines, wear appropriate PPE, and never mix with other chemicals. This calculator provides estimates only.
How to Use This Calculator
- Step 1: Select your tablet strength and enter how many tablets you're dissolving, plus water volume to get your solution concentration (ppm).
- Step 2: Enter your pool/pond volume (gallons) and target ppm to get the exact mL of solution to add.
- Step 3: For surface disinfection, enter your target ppm and solution concentration to get mixing instructions.
Understanding Chlorine Dioxide Dosing
- 1 ppm = 1 mg/L — The standard measurement for ClO₂ concentration
- Ponds with fish: 0.04-0.1 ppm maintenance, 0.2-0.4 ppm for bacterial issues
- Swimming pools: 0.1-0.2 ppm maintenance, 4.0 ppm for shock treatment
- Surface disinfection: 25-200 ppm depending on application
- Contact time: Usually 5-30 minutes for disinfection effectiveness
Dosing Formula
Dose (mL) = (Target ppm × Water Volume in gallons × 3.785) ÷ Solution Concentration (ppm)
Or for metric: Dose (mL) = (Target ppm × Water Volume in liters) ÷ Solution Concentration (ppm) × 1000
Surface mixing: Water (L) = (Tablet Strength mg × Number of tablets) ÷ Target ppm
Common Applications
- 🐟 Ponds with fish: Start with 0.04 ppm every other day for 3 doses, then maintain with 0.04-0.1 ppm weekly
- 🏊 Swimming pools: Maintain 0.1-0.2 ppm residual; shock with 4.0 ppm as needed
- 🛁 Whirlpool/Jacuzzi: 0.2-0.3 ppm maintenance; 4.0 ppm for intensive cleaning every 90 days
- 🧹 Surface cleaning: 25 ppm for standard cleaning, 50-100 ppm for disinfection, 200 ppm for heavy sanitation
- 💧 Drinking water treatment: Typically 0.2-0.8 ppm (follow local regulations)
Factors Affecting Dosage
- Water temperature: Higher temperatures increase reaction rate
- pH levels: ClO₂ is effective across a wide pH range (4-10)
- Organic load: Higher organic matter requires higher dosage
- Contact time: Longer contact allows for lower concentrations
Frequently Asked Questions
- What is the difference between chlorine and chlorine dioxide? — Chlorine dioxide is more selective and doesn't form harmful chlorinated byproducts. It's effective at lower concentrations and over a wider pH range.
- Can I use this calculator for other ClO₂ products? — Yes, as long as you know the tablet strength in mg of active ClO₂.
- How often should I dose my pool? — Typically weekly for maintenance, or as needed based on water testing.
- Is chlorine dioxide safe for fish? — Yes at low concentrations (0.04-0.1 ppm). Higher concentrations require careful monitoring or temporary fish removal.
- What's the shelf life of prepared solution? — ClO₂ solution degrades quickly; use within 24-48 hours for best results.