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Description
PristineCheck® Pool Startup & Mineral SequestrantPristineCheck Pool Startup Water Balancer & Mineral Sequestrant Give your pool the perfect foundation before every season. PristineCheck Pool Startup by PristineBlue is a professional grade liquid mineral sequestrant that binds excess calcium and other hardness minerals in your water preventing stubborn stains, ugly scaling, and cloudy water before they start. Whether you're opening your pool for the first time this year, refilling after a drain, or
PristineCheck® Pool Startup — Water Balancer & Mineral Sequestrant
Give your pool the perfect foundation before every season. PristineCheck® Pool Startup by PristineBlue is a professional-grade liquid mineral sequestrant that binds excess calcium and other hardness minerals in your water — preventing stubborn stains, ugly scaling, and cloudy water before they start. Whether you're opening your pool for the first time this year, refilling after a drain, or battling hard source water, PristineCheck prepares your pool for a cleaner, clearer swim season.
Why Use PristineCheck?
- Sequesters excess calcium and other minerals that cause staining and scale buildup
- Prevents equipment damage and unsightly deposits on pool surfaces and fixtures
- Prepares water to get the most out of the PristineBlue chemical system
- Improves overall water clarity and boosts sanitizer effectiveness
- Works with virtually every pool system — chlorine, bromine, salt, ozone, UV, and more
- Available in 8 fl oz (spa size), 32 fl oz, and 64 fl oz bottles
Dosing & Application Instructions
Pools: Add 2 oz per 1,000 gallons of pool water. Run your filter for at least 6 hours (up to 24 hours for best results), then backwash your sand or D.E. filter — or thoroughly clean your cartridge filter — before introducing PristineBlue. Wait one full day after applying PristineCheck before adding PristineBlue to the water.
Spas & Hot Tubs: Add 10 mL per 100 gallons of spa water. Run the filter for 4–6 hours, then remove and clean your filter media before proceeding with your spa care routine.
Pro Tip: Use PristineCheck at every pool opening, after any refill, or anytime your source water tests high in calcium hardness. This single step can save you hours of troubleshooting down the road.
Spas & Hot Tubs: Add 10 mL per 100 gallons of spa water. Run the filter for 4–6 hours, then remove and clean your filter media before proceeding with your spa care routine.
Pro Tip: Use PristineCheck at every pool opening, after any refill, or anytime your source water tests high in calcium hardness. This single step can save you hours of troubleshooting down the road.
Compatible Pool Systems
- PristineBlue chemical system (specifically designed as the first step)
- Chlorine and bromine sanitizer systems
- Salt chlorine generators
- D.E., sand, and cartridge filtration
- Ozonator and UV systems
Not compatible with all systems. Do not use PristineCheck alongside metal-out or metal remover products (consult the manufacturer before combining), biguanide systems (such as Baquacil® or SoftSwim®), copper or copper/silver ionizers, or algaecides containing copper. Using incompatible products together may reduce effectiveness or damage pool equipment.
Safety Information
⚠ DANGER — Read Before Handling
PristineCheck® contains 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP) and Orthophosphoric acid, which are corrosive at concentration. This product carries a GHS signal word of DANGER (NFPA Health: 2 / Reactivity: 1).
Eye Hazard: Causes serious eye damage (GHS Category 1). Always wear chemical-splash protective eyewear when handling this product.
Skin Hazard: Causes skin irritation (GHS Category 2). Wear chemical-resistant gloves and avoid contact with skin and clothing. Wash face, hands, and any exposed skin thoroughly after handling.
Additional Precautions:
📄 Download the current Safety Data Sheet (SDS-RWS-004, issued 2023-01-10)
PristineCheck® contains 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP) and Orthophosphoric acid, which are corrosive at concentration. This product carries a GHS signal word of DANGER (NFPA Health: 2 / Reactivity: 1).
Eye Hazard: Causes serious eye damage (GHS Category 1). Always wear chemical-splash protective eyewear when handling this product.
Skin Hazard: Causes skin irritation (GHS Category 2). Wear chemical-resistant gloves and avoid contact with skin and clothing. Wash face, hands, and any exposed skin thoroughly after handling.
Additional Precautions:
- Keep out of reach of children at all times
- Do not ingest — if swallowed, seek medical attention immediately
- Do not mix with other pool chemicals — risk of violent reaction or spattering of low-pH solution
- Never pour water directly into the product container — this may cause dangerous spattering
- Store in a tightly closed container above 32°F (0°C)
📄 Download the current Safety Data Sheet (SDS-RWS-004, issued 2023-01-10)
Product Details
- Active Ingredient: HEDP (1–10%) + Orthophosphoric acid (<1%)
- Form: Clear, colorless liquid
- Container Sizes: 8 fl oz (spa), 32 fl oz, 64 fl oz
- Shelf Life: No expiration on effectiveness when stored properly
- Manufacturer: Rec. Water Solutions, LLC / Earth Science Laboratories, Inc. — Rogers, AR
Helpful Resources:
PristineBlue Pool Start-Up Instructions | PristineBlue Water Care Program (PDF) | Full Safety Data Index
PristineBlue Pool Start-Up Instructions | PristineBlue Water Care Program (PDF) | Full Safety Data Index
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Great scents
Really like moisture and scents
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Reviewed in the United States on February 27, 2026
★★★★★ 4
Works
Works
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Reviewed in the United States on June 3, 2025
★★★★★ 5
Soothing
I love Sun Bum and these are my go to for lip balm. Not sticky and the flavors are great. So much that my granddaughter wants to eat them lol.
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Reviewed in the United States on August 13, 2025
★★★★★ 5
Sun protection that works!
Size: 4 Fl Oz (Pack of 2), Style: SPF 100/Lotion
My bf is very pale and this sunscreen covers him and prevents burns. Great price for all of that SPF protection’
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Good. Non greasy
Size: 4 Fl Oz (Pack of 2), Style: SPF 100/Lotion
These are very good and give good protection against the sun. Not greasy as well..
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Reviewed in the United States on May 17, 2026