Professional Combined Chlorine Testing

Product Overview

The Safe Swim® Combined Chlorine (DPD-3) test strips are professional-grade testing tools designed to measure total and combined chlorine levels in pool and spa water. These precise strips help maintain optimal water chemistry and ensure a comfortable swimming environment.

Key Features

• Advanced DPD-3 testing technology
• Dual-reading capability for total and combined chlorine
• Professional-grade accuracy
• Moisture-proof container
• Rapid color development
• 50 strips per bottle

Understanding Combined Chlorine

Combined chlorine testing is essential for:

• Detecting chloramine formation
• Preventing eye and skin irritation
• Eliminating unpleasant chlorine odors
• Maintaining proper sanitization levels
• Optimizing shock treatment timing

How to Use

1. Extract one strip from the bottle
2. Dip into water sample for 2 seconds
3. Hold level for 15 seconds
4. Compare with color chart
5. Calculate combined chlorine (Total chlorine minus Free chlorine)

Technical Specifications

Specification	Detail
Test Parameter	Combined Chlorine (DPD-3)
Measurement Range	0-10 ppm
Resolution	0.5 ppm
Response Time	15 seconds
Testing Method	DPD-3 Chemistry
Storage Temperature	15-30°C
Shelf Life	24 months
Quantity	50 strips
Accuracy	±0.2 ppm

Storage Instructions

Store in the original container with cap firmly sealed. Keep in a cool, dry area away from direct sunlight and chemical storage. Avoid exposure to moisture and high temperatures.

Professional Testing Guidelines

Combined chlorine levels should ideally remain below 0.2 ppm. Regular testing helps determine when shock treatment is necessary, typically when combined chlorine levels exceed 0.5 ppm. For accurate results, test both free and total chlorine levels to calculate the combined chlorine concentration.

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Pool & Spa Chemical Guide

As a retailer of pool and spa maintenance products, I've created this comprehensive guide to help you understand and maintain proper water chemistry for your pool or spa.

Water Balance Essentials

pH Levels (7.2-7.6)

The cornerstone of water chemistry that affects all other aspects of water treatment:

• Too high: Reduces chlorine effectiveness, causes scaling
• Too low: Equipment corrosion, skin/eye irritation
• Regular testing and adjustment crucial for optimal balance

Chlorine (1-3 ppm)

Primary sanitizer for most pools and spas:

• Free chlorine maintains water safety
• Stabilized chlorine provides longer-lasting protection
• Shock treatments eliminate contaminants and chloramines

Alkalinity (80-120 ppm)

Acts as a buffer for pH levels:

• Prevents rapid pH fluctuations
• Protects against corrosion
• Helps prevent scaling issues

Specialized Treatments

Water Clarifiers

Enhances filtration efficiency:

• Coagulates tiny particles
• Improves water clarity
• Reduces filter strain

Algaecides

Prevents and treats algae growth:

• Regular prevention dosing
• Brush-free formulas available
• Compatible with all sanitizing systems

Stabilizers

Protects chlorine from UV degradation:

• Essential for outdoor pools
• Extends chlorine effectiveness
• Reduces chemical consumption

Maintenance Schedule

Daily Tasks

• Check sanitizer levels
• Run filtration system
• Remove visible debris

Weekly Tasks

• Test complete water chemistry
• Balance pH and alkalinity
• Add maintenance chemicals

Monthly Tasks

• Deep clean filters
• Check stabilizer levels
• Inspect equipment

Safety Guidelines

• Store chemicals separately
• Keep in cool, dry location
• Never mix different products
• Follow dosage instructions carefully
• Keep records of all treatments

Note: Professional advice recommended for specific chemical treatments