Calcium Hypochlorite Granules 68% Dedusted – Drinking Water Sterilisation, Pool Shock, Disinfection

Professional-grade Calcium Hypochlorite Granules 68% (unstabilised chlorine) designed for drinking water sterilisation, pool treatment, and disinfection. Dedusted for safer handling and fast dissolution, this high-purity product delivers reliable chlorine release without stabiliser, making it suitable for potable water applications under controlled dosing.

Key Features

• 68% available chlorine for powerful sanitisation

• Unstabilised (no cyanuric acid) – safe for potable water treatment

• Dedusted granules for reduced dust and safer handling

• Fast dissolving, high solubility (~217 g/L)

Uses

• Drinking water sterilisation (emergency & controlled systems)

• Swimming pool shock and maintenance chlorination

• Spa and hot tub sanitation

• Surface and equipment disinfection

• Commercial water hygiene and treatment

📋 Product Details

Weight: 250g / 1kg
Grade: 65–68% available chlorine
Form: Dedusted granules
pH (10 g/L): 10.5 – 11.5
Solubility: 217 g/L at 20°C

5 Main Uses – Step by Step (Detailed Professional Instructions)

1. Drinking Water Sterilisation (Potable Water Treatment)

⚠️ CRITICAL: Never add granules directly to drinking water

Step 1: Pre-filter Water (if needed)

• If water is cloudy, filter through cloth or sediment filter

• Suspended solids reduce chlorine effectiveness

Step 2: Prepare Stock Chlorine Solution

• Weigh 1 gram calcium hypochlorite

• Add to 1 litre clean water in a clean container

• Add water first, then chemical (prevents reaction risk)

• Stir for at least 15 minutes until fully dissolved

Step 3: Dose Drinking Water

• Add 0.1 ml (≈2 drops) of solution per 1 litre water

• For 10 litres → 1 ml

• For 100 litres → 10 ml

Step 4: Contact Time

• Leave for minimum 30 minutes

• Target residual chlorine: 0.2 – 0.5 mg/L

Step 5: Verification

• Water should have slight chlorine smell

• If not → repeat half dose and wait 15 minutes

Step 6: Storage After Treatment

• Keep treated water covered

• Use within 24 hours for best quality

Safety:

• Do not overdose

• Never mix with acids (toxic gas risk)

• Harmful if swallowed in concentrated form

2. Swimming Pool Shock Treatment

Step 1: Test Water

• Ideal pH: 7.0 – 7.4

• Ensure filtration system operational

Step 2: Calculate Dose

• Typical shock dose: 10–15 g per m³ (1,000 litres)

• Example:

  • 10,000 L pool → 100–150 g

Step 3: Pre-dissolve

• Dissolve granules in bucket of water (5–10 litres)

• Stir until dissolved

Step 4: Apply to Pool

• Add evenly around pool perimeter

• Do NOT add when swimmers present

Step 5: Circulation

• Run pump for 8–12 hours

Step 6: Re-test Before Use

• Chlorine should drop below 3 mg/L before swimming

Safety:

• Never mix with other pool chemicals

• Add chemical to water, not water to chemical

3. Routine Pool Chlorination (Maintenance)

Step 1: Daily Dose Calculation

• Typical: 500 g – 1 kg per 100 m³ per day

Step 2: Adjust for Conditions

• Increase during:

  • Hot weather

  • Heavy pool usage

Step 3: Application

• Dose via skimmer (if suitable) or pre-dissolve

• Add gradually with pump running

Step 4: Monitor Levels

• Maintain:

  • Free chlorine: 1–3 mg/L

Step 5: Balance Water Chemistry

• Total alkalinity: 60–120 mg/L

4. Spa / Hot Tub Treatment

Step 1: Measure Water Volume

• Example: 1,000 litres spa

Step 2: Dose

• Add 2–5 grams per 1,000 litres

Step 3: Pre-dissolve

• Dissolve in 1–2 litres water

Step 4: Add with Jets Running

• Ensures even distribution

Step 5: Contact Time

• Wait 15–30 minutes

Step 6: Test Before Use

• Safe chlorine: 3–5 mg/L for spa

Safety:

• Keep cover open briefly after dosing

• Avoid inhaling vapours

5. Surface & Equipment Disinfection

Step 1: Pre-clean Surface

• Remove dirt and organic matter

Step 2: Prepare Disinfection Solution

• Dissolve 1–2 grams in 1 litre water

• Creates approx. 500–1000 ppm chlorine solution

Step 3: Apply Solution

• Use cloth, spray, or immersion

Step 4: Contact Time

• Leave for 5–10 minutes

Step 5: Rinse (if required)

• Especially for food-contact surfaces

Step 6: Air Dry

Safety:

• Use gloves and eye protection

• Use in ventilated area

📈 Other Names

Alternative Names:
Calcium Hypochlorite 68%, Cal Hypo Granules, Chlorine Granules, Drinking Water Chlorine, Pool Shock, Water Purification Chlorine

Keyword-Rich Titles:

• Calcium Hypochlorite Drinking Water Treatment 

• Chlorine Granules 68% for Pools & Potable Water

• Cal Hypo Granules Emergency Water Purification

• Pool Shock & Water Sterilisation Chlorine Granules

• Unstabilised Chlorine Granules High Strength

❓ FAQs

1. Can I use this for drinking water?
Yes, when properly diluted and dosed using a stock solution, it is suitable for potable water treatment.

2. Why is unstabilised chlorine important?
It contains no cyanuric acid, making it safe for drinking water applications.

3. Can I add granules directly to water?
No, always prepare a solution first to avoid overdosing and safety risks.

4. What are the main hazards?
It is a strong oxidiser, corrosive, and must never be mixed with acids.