Aquasol AE211 – Total Hardness Test Kit (250 Tests)
Aquasol AE211 – Total Hardness Test Kit (250 Tests)
Couldn't load pickup availability
The Aquasol AE211 Total Hardness Test Kit is a reliable chemical test kit designed for accurate determination of total hardness (as CaCO₃) in water. Based on the EDTA titration method, this kit is suitable for both low and high hardness ranges, making it ideal for drinking water, RO plants, industrial water systems, and laboratory analysis.
🫗 Quick Highlights
- Complete kit for 250 hardness tests
- Suitable for field & lab use
- Dual-range testing capability
- Clear visual endpoint for easy interpretation
Share
250+ tests
Conforms to APHA Standard Methods (2340-C)
Clear color change endpoint (Red → Blue)

💧 Key Benefits
- Accurate EDTA-based hardness determination
- Covers two hardness ranges in one kit
- Clear color change endpoint (Red → Blue)
- Long shelf life of 36 months
- Simple procedure – no instruments required
- Suitable for field and laboratory testing
- Conforms to APHA Standard Methods (2340-C)
📌 Technical Properties
- Product Code: AE211
- Test Parameter: Total Hardness (as CaCO₃)
- Measurement Ranges:2 – 40 ppm (mg/L)25 – 500 ppm (mg/L)
- Number of Tests: 250
- Method: EDTA Titrimetric Method
- Shelf Life: 36 Months
- Reference Standard: APHA 22nd Edition, Method 2340-C
📦 In-the-box
Reagents:
- TH 1S (1 No.)
- TH 2 (1 No.)
- TH 3 (1 No.)
- TH 5 (1 No.)
Accessories:
- 25 ml Plastic Test Jar – 1 No.
- Plastic Spoon – 1 No.
- Procedure Label – 1 No.
🌊 Applications
- Drinking & mineral water
- RO and water treatment plants
- Borewell & groundwater testing
- Swimming pool water
- Boiler & cooling tower water
- Industrial process & wastewater
- Aquaculture and chiller systems
🛡️ Safety & Handling
- Store reagents in a cool, dry place at ambient temperature
- Keep bottles tightly closed after use
- Use only provided reagents for accurate results
- Avoid contamination of reagents
❓ How To Use
🔹 For Low Range (2 – 40 ppm)
- Take 25 ml of the water sample in the test jar.
- Add one spoon of TH 1S and mix well until dissolved.
- Add 10–12 drops of TH 2 and mix properly.
- If the solution turns blue, it indicates no hardness. If it turns red, hardness is present.
- Add TH 3 dropwise, counting each drop while mixing, until the color changes from red to blue.
- If the color does not change after 20 drops, hardness is above 40 ppm.
Calculation:
Hardness (ppm as CaCO₃) = 2 × number of drops of TH 3
🔹 For High Range (25 – 500 ppm)
- Take 10 ml of the water sample in the test jar.
- Add one spoon of TH 1S and mix well.
- Add 10–12 drops of TH 2 and mix.
- Add TH 5 dropwise, counting drops while mixing, until the color changes from red to blue.
Calculation:
Hardness (ppm as CaCO₃) = 25 × number of drops of TH 5
⚠️ Important Tips
- Always count drops carefully for accurate results
- Rinse the test jar before and after use
- Keep reagents tightly closed after use
- Avoid exposure to heat and sunlight
⚙️ How It Works
In alkaline conditions, calcium and magnesium ions react with Eriochrome Black T indicator to produce a wine-red color. During titration, EDTA complexes with calcium and magnesium ions, and once fully complexed, the solution changes from wine red to blue, indicating the endpoint of total hardness.
🧪 Calibration & Usage
- Ensure the test jar is clean and rinsed before use
- Use the correct sample volume (25 ml for low range / 10 ml for high range)
- Add reagents in the exact sequence for accurate results
- Mix properly after each reagent addition
- Add titrant dropwise and count carefully
- Observe the color change (red → blue) to determine the endpoint
- Perform testing at room temperature for best accuracy
- Always close reagent bottles tightly after use
FREQUENTLY ASKED QUESTIONS
Do you provide installation services?
Yes. We install RO plants, softeners, iron removal filters, ETP/STP systems, and all types of domestic & industrial water treatment plants across India.
Do you offer GST invoices?
Yes. Every order comes with a100% GST-compliant invoice, suitable for dealers, resellers, and industrial use.
How do I know which chemical or filter is suitable for my water?
You can share your raw water report, TDS, or problem description. Our technical team will recommend the correct chemical, membrane, filter media, or system.
Please connect with us from Contact Us.
Can I speak to someone before placing an order?
Yes, you can contact us directly via phone, email, or WhatsApp for product guidance or bulk pricing.