4-in-1 & 5-in-1 Water Quality Tester – Mian & Sons Scientific Traders
Mian & Sons Scientific Traders is pleased to present our latest Multi-Parameter Water Quality Tester available in 4-in-1 and 5-in-1 models. Designed to deliver accurate, reliable, and convenient readings for multiple water quality parameters, these testers are ideal for laboratories, farms, aquaculture, pools, drinking water systems, aquarium hobbyists, hydroponics, and industrial applications across Punjab & all Pakistan.
🔍 What Is It?
A 4-in-1/5-in-1 Water Quality Tester is a handheld digital instrument that measures several key water quality indicators in one device. The “4-in-1” model typically includes pH, EC (electrical conductivity), TDS (total dissolved solids) and temperature, while the “5-in-1” variant adds salinity (or salt content) as a fifth parameter. These testers combine multiple sensors into a single probe or set of probes, reducing the need for separate instruments.
⚙️ Core Features
- ✔️ **Multiple Parameters** – Measure pH, EC, TDS, Temperature; and in 5-in-1: Salinity (some models also support ppt / seawater scale). :contentReference[oaicite:0]{index=0}
- ✔️ **Wide Measurement Ranges** –
- pH: ~0.00 to 14.00 pH :contentReference[oaicite:1]{index=1}
- TDS: often up to 9,999 ppm or more, sometimes in both ppm and ppt (parts per thousand) scales. :contentReference[oaicite:2]{index=2}
- EC: comparable range, up to ~10,000 µS/cm or higher, or mS/cm for higher conductivity waters. :contentReference[oaicite:3]{index=3}
- Temperature: frequently 0.1 °C resolution, operating between ~0-60°C (32-140℉) :contentReference[oaicite:4]{index=4}
- Salinity (5-in-1): usually 0.00-25.00% or equivalent salt concentration, sometimes also in ppt or ppm. :contentReference[oaicite:5]{index=5}
- ✔️ **Automatic Temperature Compensation (ATC)** – essential for EC, TDS readings to be accurate across different temperatures. :contentReference[oaicite:6]{index=6}
- ✔️ **Backlit Display** – for easy reading in low light conditions. :contentReference[oaicite:7]{index=7}
- ✔️ **Auto Power-Off Feature** – conserves battery life, typically after a few minutes of inactivity. :contentReference[oaicite:8]{index=8}
- ✔️ **Durable & Portable** – compact design, often waterproof or water resistant (e.g. IP67 rating) in many 5-in-1 models. :contentReference[oaicite:9]{index=9}
- ✔️ **Calibration & Hold Function** – manual or automatic calibration points for pH and EC; HOLD function to freeze display. :contentReference[oaicite:10]{index=10}
📊 Typical Specifications
| Parameter | Typical Range | Resolution | Accuracy/Tolerance |
|---|
| pH | 0.00 – 14.00 | 0.01 pH | ±0.05 pH |
| TDS | 0 – 9,999 ppm (or up to 10,000+ in some models) | 1 ppm | ±2% Full Scale |
| EC | 0 – ~10,000 µS/cm (or equivalent in mS/cm) | 1 µS/cm | ±2% F.S. |
| Temperature | 0.0 – 60.0 °C (32-140 °F) | 0.1 °C | ±0.5 °C |
| Salinity (for 5-in-1) | 0.00 - ~25.00 % (or in units like ppt/ppm) | 0.01 % or 0.1 ppt | ±0.1-1.0 % depending on range |
🔧 How It Works / Principle
The device uses specialised sensors / probes for each parameter. For example:
- pH sensor: measures hydrogen ion activity in the sample, giving acidity/alkalinity.
- EC sensor: measures how well water conducts electrical current, which correlates with ion concentration.
- TDS: estimated from EC as Total Dissolved Solids, converted via a factor or algorithm.
- Temperature sensor: needed because EC & TDS vary with temperature; ATC adjusts readings to reference temperature.
- Salinity sensor (in 5-in-1): measures salt content; useful for aquariums, marine water, agriculture, etc.
🌿 Applications & Use-Cases
- 💧 Drinking Water Safety: Check whether water from RO systems, boreholes, wells is within safe pH, TDS limits.
- 🐠 Aquaculture & Fish Tanks: Monitor salinity, pH, and TDS to ensure healthy aquatic life.
- 🏞 Hydroponics & Farming: Nutrient solutions need correct EC / TDS; pH must be optimal for plant absorption.
- 🧪 Laboratory Analysis: Quick multi-parameter checks for sample pre-analysis or regular lab use.
- 🏊 Pools, Spas & Swimming Facilities: Maintain water clarity, salinity, and balancing chemical content.
- 🏘 Industrial Water Systems: Cooling towers, wastewater treatment, boiler water monitoring.
- 🏠 Home Use: Aquariums, drinking water, gardening, etc.
📦 Benefits of 4-in-1 / 5-in-1 Testers
- ⏱ Saves time — one device measuring many parameters avoids carrying multiple instruments.
- 💰 Cost efficiency — cheaper than buying separate meters for each parameter.
- 📋 Portability — easier to carry in pocket / field bag.
- ✅ Quick readings — results in seconds.
- ⚙️ Versatile — suitable for different liquids (fresh, salt, RO, pool, aquarium) depending on ranges.
- 🔒 Consistency — temperature compensation and calibration options reduce error and enhance reliability.
🛠 Important Features to Check Before Buying
- Range capacities — ensure temperature, EC/TDS/salinity suited to your application. For salt water you’ll need higher ranges. :contentReference[oaicite:11]{index=11}
- Accuracy / resolution — worth more in precision-sensitive contexts. :contentReference[oaicite:12]{index=12}
- Quality of sensors / probe — a good pH glass electrode, durable EC/TDS probe, waterproof build are plus. :contentReference[oaicite:13]{index=13}
- Auto-calibration or manual calibration availability. :contentReference[oaicite:14]{index=14}
- Display visibility & backlight. :contentReference[oaicite:15]{index=15}
- Power source & battery life — button cells (LR44), sometimes rechargeable or standard batteries. :contentReference[oaicite:16]{index=16}
- Durability & protection — water resistance (IP rating), sturdy casing. :contentReference[oaicite:17]{index=17}
📋 Example Model Specs (Typical 5-in-1 Model)
- Model: 5-in-1 Water Quality Pen (often generic / China origin) with IP67 rating. :contentReference[oaicite:18]{index=18}
- Functions: pH / EC / TDS / Salinity / Temperature. :contentReference[oaicite:19]{index=19}
- pH Range: 0.00-14.00, Accuracy ±0.05 pH, Resolution 0.01 pH. :contentReference[oaicite:20]{index=20}
- TDS Range: up to 9,999 ppm or 10,000+, sometimes up to 10000+ depending on model; Accuracy ±2% F.S. :contentReference[oaicite:21]{index=21}
- EC Range: up to 10,000 µS/cm or equivalent; Accuracy ±2% F.S. :contentReference[oaicite:22]{index=22}
- Salinity: 0.00-25.00% or similar; Resolution 0.01%; Accuracy variable by range ±0.1-1%. :contentReference[oaicite:23]{index=23}
- Temperature Range: 0.1-60.0 °C; Accuracy ±0.5 °C; Resolution 0.1 °C. :contentReference[oaicite:24]{index=24}
- Display: Backlit LCD, easy to read. :contentReference[oaicite:25]{index=25}
- Auto shut off: ~5 minutes (typical) to conserve battery. :contentReference[oaicite:26]{index=26}
- Battery: Usually button cells (LR44) or similar; some models include batteries. :contentReference[oaicite:27]{index=27}
- Water Resistance / Protection: IP67 in many 5-in-1 models. :contentReference[oaicite:28]{index=28}
📦 Package Contents (Typical)
- 1 × 4-in-1 or 5-in-1 Water Quality Tester Pen / Pencil
- 1 × Protective Cap or Sleeve
- Buffer powder / solutions for calibration (often pH 4.00 / 6.86 / 9.18) in many models. :contentReference[oaicite:29]{index=29}
- Instruction Manual
- Batteries included (often LR44 × 3 / LR44 × 4 depending on model) in many models. :contentReference[oaicite:30]{index=30}
📌 Usage Instructions
- Remove protective cap and ensure probe is clean.
- Turn on device and select function (pH / TDS / EC / Salinity / Temperature) if required.
- Immerse the probe or sensor into water sample up to indicated immersion mark.
- Wait for reading to stabilize (usually 2-5 seconds).
- Record the value. Use HOLD function if provided.
- After use, rinse probe with distilled water, dry gently, replace cap.
- Store in cool, dry place. Replace batteries when display dims or auto-off issues appear.
🔒 Safety & Handling Tips
- Avoid immersing entire device in water if not waterproof.
- Don’t let electrodes dry out—keep sensor moist or use protective cap.
- Calibrate periodically with standard buffer solutions for pH and known EC/TDS standards.
- Avoid exposing LCD display to direct sunlight for long durations.
- Store away from corrosive or harsh chemicals unless device specifically rated.
📍 Contact & Support – Mian & Sons Scientific Traders
For product pricing, bulk orders, and after-sales support, contact us:
Phone / WhatsApp: +92 301 8183105
Email (Gmail): miansonstraders606@gmail.com
Email (Yahoo): miansonstraders606@yahoo.com
Website: mianscientific.com
Location: Punjab, Pakistan – we deliver to Lahore, Faisalabad, Gujranwala, Multan, Sialkot, Rawalpindi, Bahawalpur and cities across the province.
✅ Why Choose It?
- Multi-parameter measurement saves cost and space.
- User-friendly design suits both professionals and hobbyists.
- Quick measurements for immediate decision making.
- Reliable sensors and temperature correction improve accuracy.
- Great value compared to buying separate meters.
- Strong local support through Mian & Sons Scientific Traders for calibration and spare parts.
Enhance your water quality monitoring today with our 4-in-1 or 5-in-1 Water Quality Tester. Trust it for professional, industrial, and home use alike — quality, accuracy & reliability, all in one pen-type tool.
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