Accurate pool water analysis starts with the right reagents. These rapid-dissolving tablets — DPD No. 1, No. 3, No. 4, and Phenol Red — offer unmatched reliability and compliance for precise chlorine, oxygen, and pH measurements. Trusted by professionals using Pooltester, Checkit, and Pool Check systems, they ensure clear, safe water with every test.
What Are DPD & Phenol Red Rapid Tablets?
These are premium-grade reagent tablets designed for colorimetric analysis of pool and spa water using Pooltester, Checkit, and Pool Check kits. Whether you need to assess free chlorine, total chlorine, solid oxygen, or pH levels, each tablet offers rapid dissolution, long shelf life, and ISO-certified accuracy. Ideal for residential and commercial pool maintenance.
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DPD reagent tablets - Pooltester, Checkits and Pool Check
€21.44
Accurate pool water analysis starts with the right reagents. These rapid-dissolving tablets — DPD No. 1, No. 3, No. 4, and Phenol Red — offer unmatched reliability and compliance for precise chlorine, oxygen, and pH measurements. Trusted by professionals using Pooltester, Checkit, and Pool Check systems, they ensure clear, safe water with every test.
What Are DPD & Phenol Red Rapid Tablets?
These are premium-grade reagent tablets designed for colorimetric analysis of pool and spa water using Pooltester, Checkit, and Pool Check kits. Whether you need to assess free chlorine, total chlorine, solid oxygen, or pH levels, each tablet offers rapid dissolution, long shelf life, and ISO-certified accuracy. Ideal for residential and commercial pool maintenance.
Transit time after dispatch is 2 - 3 working days.
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Key Benefits
- Rapid Dissolution: Tablets dissolve quickly for immediate colorimetric readings.
- Long-Term Shelf Stability: Minimum guaranteed shelf life of 10 years.
- High Precision: Accurate dosing in tablet form eliminates measurement errors.
- Certified Quality: Conforms to UNE-ISO 17381 for water testing reagents.
- Universal Compatibility: Specifically formulated for use with Pooltester, Checkit, and Pool Check devices.
- Safe & Easy to Handle: Compact blister packaging with green pattern backing for easy identification.
Main Functions
Each reagent tablet performs a specific water testing function:
- DPD No. 1 Rapid: Measures free chlorine levels.
- DPD No. 3 Rapid: Measures total chlorine (free + combined).
- DPD No. 4 Rapid: Designed for solid oxygen disinfectant measurement.
- Phenol Red Rapid: Measures pH levels accurately between 6.8–8.2.
Technical Features
- Tablet Form: Crystalline white tablets in green-pattern foil sheets
- Packaging: 250 tablets per box
- Usage: Chemical analysis only, not for any other purpose
- Standard: Conforms to UNE-ISO 17381
- Compatibility: Pooltester, Checkit, Pool Check
- Safety: Child-resistant packaging, poison center contact included
How to Use It
- Fill your Pooltester or Checkit with a water sample.
- Insert the appropriate reagent tablet (DPD 1, 3, 4, or Phenol Red).
- Close and shake gently until the tablet dissolves fully.
- Compare the resulting color with the reference scale to determine values.
Why Choose This Product?
When water quality matters, precision is essential. These reagent tablets offer consistent, laboratory-grade performance in a user-friendly form. With 10-year guaranteed longevity and certified manufacturing, they are the gold standard for routine pool testing.
Safety, Storage & Eco Info
- Storage: Store in a cool, dry place in original packaging.
- Disposal: Dispose of used materials according to local regulations.
- Warnings: Do not ingest. Keep out of reach of children. Only for water testing.
- Emergency Contact: Poison Center Berlin: +49 30 30686 790
FAQs
Can these tablets be used with any test kit?
No, they are specifically made for Pooltester, Checkit, and Pool Check kits only.
Do the tablets expire?
Yes, but they are guaranteed for at least 10 years from the production date if stored correctly.
What if my chlorine levels are above 10 mg/l?
High free chlorine can bleach the DPD color, giving inaccurate results. Dilution is recommended.
Do pH readings vary with alkalinity?
Yes, low total alkalinity can skew pH results. Always monitor both values.
Why Shop with LordsWorld
- Official distributor of certified pool testing reagents
- Fast EU shipping and tracked delivery options
- Secure payments and expert customer service
- Original products with full compliance documentation
Support & Bulk Orders
Need help selecting the right reagent or ordering in bulk? Contact us here for personalized assistance.
Available Variants
- 14638 – DPD Nº 1 Rapid (250 tablets): For free chlorine
- 14639 – DPD Nº 3 Rapid (250 tablets): For total chlorine
- 21573 – DPD Nº 4 Rapid (250 tablets): For solid oxygen
- 14640 – Phenol Red Rapid (250 tablets): For pH measurement
Legal Note
Compliant with UNE-ISO 17381 standards for reagent quality and performance in water testing. Product is for analytical use only.
Key Characteristics
- Tablet Type:Rapid-dissolving reagent tablets
- Compatibility:Pooltester, Checkit, Pool Check
- Formulation:N-Diethyl-phenylenediamine base (DPD)
- Usage:Free/Total Chlorine, Solid Oxygen, pH
- Shelf Life:10 years minimum
- Certification:UNE-ISO 17381
- Pack Size:250 tablets
14638-ANALISI
113 Items
Data sheet
- Product Type
- Pool Water Analyser
- Shipping_label
- Normal
Specific References
- EAN13
- 0652733723727
- MPN
- 14638-ANALISI
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