Test All Water pH Minus/Dry Acid
Test All Water pH Minus/Dry Acid is a versatile and efficient solution for managing high pH levels in various water systems. Whether you're maintaining a swimming pool, managing an industrial water system, or supporting horticultural operations, this product ensures precise pH control, protecting equipment and enhancing water quality. A granular acid for lowering the pH of pool water when your pool water goes above 7.5. This can also be used as a decreaser for Total Alkalinity in your pool water.
Chemical name: Sodium Bisulphate
Key Features:
- Efficient pH reduction
- Granular form for easy handling
- Safe and non-fuming
- Versatile application
- Precise control over water chemistry
- Enhanced equipment protection
- Improved water clarity and comfort
- Environmentally friendly
Ideal for use in:
- Swimming pools and spas
- Fountains and decorative water features
- Industrial water systems
- Horticulture and irrigation
- Aquaculture
SKU: PHMIN7OL
pH Minus granules enables you to reduce your pools pH to the ideal pool pH level, which is between 7.2 – 7.6, promoting bather comfort, optimum chemical efficiency and protection of pool plant equipment. Test the pH of your pool water if it is above 7.6, use pH minus to reduce it.
Application Instructions:
1. Pre-dissolve the product in a clean plastic container at a maximum rate of 100g of product per 2.2 gallons (10ls) of clean warm water. Stir well to ensure product is fully dissolved. Carefully add the resulting solution to the pool whilst the pump(s) are turned ‘on’, preferably near to the water inlets to aid distribution.
2. After a minimum of 8 hours, recheck the pH level and if necessary repeat the treatment until the ideal pH is established. Please note a number of treatments may be required.
| Dosing Rates | |||
| Water Volumes | To Lower pH Levels | ||
| Litres | Gallons | Dose Rate | |
| 4,545 | 1,000 | 50g | |
| 9,090 | 2,000 | 100g | |
| 22,700 | 5,000 | 250g | |
| 45,450 | 10,000 | 500g | |
| 68,175 | 15,000 | 750g | |
General Precautions
Dosing· Wear eye and face protection and ensure granules are not blown back into your face.
· Never mix with other chemicals including household cleaners, as a dangerous
reaction may occur.
· When pre-dissolving product always add to water not vice versa.
Handling/Storage· Handle products in a well-ventilated area, preferably outdoors.
· Wash hands after use.
· Ensure chemicals do not become damp in storage – store in a cool dry place.
THIS Ph Minus EC Label CONTAINS SODIUM HYDROGEN SULPHATE 231-665-7
Risks· Risk of serious damage to eyes.
Safety· Keep locked up and out of reach of children.
· If swallowed, seek medical advice immediately and show this container or label.
· Avoid contact with skin.
· In case of contact with eyes, rinse immediately with plenty of water and seek
medical advice.
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.