Skip to content

Home
Hot Tubs
- All Hot Tubs
- Catalina Spas™
  
  Why Catalina Spas™ Hot Tubs?
  Catalina™ CX Hot Tubs
  Catalina™ Aquadynamic Hot Tubs
  Signature Hot Tubs
- Coast Spas®
  
  Why Coast Spas®?
  Coast Spas® - Hot Tubs
- Holiday Park Hot Tubs
- Commercial Spas
- Marine Hot Tubs
- Clearance Hot Tubs
Swim Spas and Pools
Shop
- Shop All
- Accessories
  
  All Accessories
  Cover Lifters
  Pool Products
  Sealants and Glues
  Steps
  Vacuums
- Auxiliary Heating
- Chemicals
  
  Shop All
  Accessories
  Auto Dosing
  Balancers
  Cleaners
  Sanitisers
  Starter Kits
  Water Treatments
  Water Testing
  Automated Water Treatment
- Covers
  
  Spa and Swimspa Covers
  Automated Covers
  Clearance Covers
  Cover Accessories
  Floating Insulation Covers
- Filter Cartridges
- Coast Spas® Spare Parts
  
  All Coast Spas® Spare Parts
  Coast Spas® Filtration
  Coast Spas® Headrests
  Coast Spas® Jets
  Coast Spas® Plumbing
  Coast Spas® Misc
  Coast Spas® Shell Fittings
- Spare Parts by Part
  
  All Spare Parts
  Audio Visual
  Control Panels & Overlays
  Electrical
  Headrests
  Heaters
  Valves
  Jets
  Jet Bodies
  Pumps
  Packs
  Miscellaneous
- Air Control Systems
  
  All InAir™ Products
  InAir™ Ventilation
  InAir™ Purifiers
  InAir™ Accessories
  InAir™ Test Kits
  Dehumidifiers
- Heat Pumps
- Pergolas and Saunas
  
  BBQ Huts
  Pergolas
  Saunas
Owners
- Spa and Swim Spa Servicing
- Diagnostics and Repairs
  
  Fault Codes
- Downloads
- Installation Tips
- Maintenance Tips
- Owners Manuals
- Warranty
- Warranty Registration
About
Contact Us

Country/region

Search

Facebook
Instagram
TikTok
YouTube

Home
Hot Tubs
Swim Spas and Pools
Shop
Owners
About
Contact Us

Search

Item added to your cart

View cart

Collection: Water Testing

Filter:

Availability

0 selected

Availability

In stock (19 products)
Out of stock (1 product)

Price

The highest price is £563.76

£

From

£

To

Product type

0 selected

Product type

Chemical Accessory (12 products)
Water Testing (5 products)

Brand

0 selected

Brand

Catalina Spas (18 products)
InAir (2 products)

Sort by:

20 products

Filter and sort Filter

Filter and sort

Filter

20 products

Availability

In stock (19 products)
Out of stock (1 products)

Clear

Price

The highest price is £563.76

£

From

£

To

Clear

Product type

Chemical Accessory (12 products)
Water Testing (5 products)

Clear

Brand

Catalina Spas (18 products)
InAir (2 products)

Clear

Sort by:

Remove all

20 products

Reagents for Free Chlorine Pool Checker

Reagents for Free Chlorine Pool Checker

Regular price £8.00 GBP

Regular price Sale price £8.00 GBP
Pool Line Checker- Free Chlorine HC

Pool Line Checker- Free Chlorine HC

Regular price £86.40 GBP

Regular price Sale price £86.40 GBP
Pool Line Checker- TDS Tester

Pool Line Checker- TDS Tester

Regular price £91.80 GBP

Regular price Sale price £91.80 GBP
Pool Line Checker- pH Tester

Pool Line Checker- pH Tester

Regular price £63.60 GBP

Regular price Sale price £63.60 GBP

1
2

Subscribe to our emails

Email

Facebook
Instagram
YouTube
TikTok

Country/region

Search

Payment methods

© 2026, Catalina Spas Powered by Shopify

Refund policy
Privacy policy
Terms of service

Choosing a selection results in a full page refresh.
Opens in a new window.