



Water Hardness Test Paper Strips, Pack of 50
AUD 59.90(Ex GST)
AUD 59.90(Ex GST)
- Water hardness test strips for laboratory and educational use
- Supplied as pack of 50 strips as listed
- Measures water hardness due to calcium carbonate as listed
- Calibrated at 0, 50, 125, 250 and 500 ppm
- Also calibrated at 0, 3, 7, 15 and 30 grains per gallon
- Helps indicate whether water is soft or hard
- Provides results in seconds as listed
- Suitable for routine water-quality demonstrations
- Useful for science classrooms and general water testing activities
- Intended for approximate screening rather than certified analysis
- Confirm colour chart and test instructions before use
- Use under appropriate laboratory or educational supervision
- Description
Description
The Water Hardness Test Paper Strips, also known as water hardness test strips or calcium carbonate hardness indicator strips, are designed for quick screening of water hardness in compatible water samples. These strips measure water hardness due to calcium carbonate as listed, helping users identify whether a water sample is soft, moderately hard or hard using the supplied colour comparison method. The ppm calibration points are listed as 0, 50, 125, 250 and 500 ppm, supporting practical comparison across common water hardness levels.
The strips are also calibrated in grains per gallon at 0, 3, 7, 15 and 30 grains per gallon, giving users an additional hardness scale for interpretation. This product is suitable for classroom demonstrations, water-quality education, routine screening and general laboratory activities where approximate water hardness information is required. Users should confirm sample type, colour chart availability, test method, reading time, storage condition, expiry status and accuracy requirement before use.
These strips are intended for approximate water hardness screening only. They should not be used where certified water analysis, regulatory compliance testing or calibrated instrumental measurement is required. Handle unknown water samples according to appropriate laboratory hygiene and PPE procedures, especially if the water source may be contaminated.
This product is intended for laboratory or educational settings only and should be used under appropriate supervision. This item is supplied as Water Hardness Test Paper, pack of 50 strips only. Sample containers, colour chart replacements, pipettes, water samples, PPE, worksheets and additional water-testing accessories are not included unless specified separately.
LabChoice Australia supplies Water Hardness Test Paper Strips and laboratory indicator papers for school science laboratories, university teaching laboratories, water-quality demonstrations and general educational laboratories requiring practical test strips for hardness screening.
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What Our Customers Say
Emma Roberts
11 months ago
We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
Michael Grant
1 year ago
Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
The quality of the glass is exceptional — resistant to heat, easy to clean, and consistently accurate in measurement. It’s reassuring to know there’s an Australian supplier that combines scientific precision with genuine customer care. I’d recommend LabChoice to any research team looking for dependable labware
Sarah Nguyen
1 year ago
We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
Dr. Emily Hart – Senior Research Scientist
1 year ago
LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
Mark Stevens
1 year ago
We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab






























