Astralpool / Rolachem ORP Calibration Solution - 100ml - Redox - 700mV - 600117
Astralpool / Rolachem ORP Calibration Solution - 100ml - Redox - 700mV - 600117 is temporarily out of stock and will ship as soon as it's available.
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Astralpool / Rolachem ORP Calibration Solution - 100ml - Redox - 70...
Astralpool / Rolachem ORP Calibration Solution - 100ml - Redox - 700mV - 600117 is temporarily out of stock and will ship as soon as it's available.
Fluidra AstralPool RolaChem ORP Calibration Solution 700mV - 100mL - 600117
Genuine Fluidra / AstralPool RolaChem 700mV ORP calibration solution for checking and calibrating ORP (Redox) probes and sensors used with automatic pool chemical dosing systems.
This 100mL reference solution provides the known ORP value required to correctly calibrate the sensor and controller. Regular calibration helps identify probe drift and ensures the dosing controller is receiving an accurate ORP signal.
Supplied as a genuine AstralPool / RolaChem part, but the solution itself is a standard 700mV ORP reference and is not brand-specific. It can be used to calibrate ORP probes and controllers from other manufacturers wherever the calibration procedure specifies a 700mV reference value.
- Manufacturer: Fluidra / AstralPool / RolaChem
- Product: ORP / Redox Calibration Solution
- Reference: 700mV
- Size: 100mL
- Fluidra / AstralPool Part Number: 600117
- Suitable for: AstralPool and RolaChem ORP control systems, and other brands of ORP probe, controller or meter calibrated at 700mV
Use With Other Brands of ORP Probe
ORP calibration solution is a chemical reference standard rather than a branded consumable. What matters is the reference value the equipment is calibrated against, not the badge on the bottle.
If the manufacturer of your ORP probe, controller or handheld meter specifies calibration against a 700mV solution, this product can be used. That makes it a semi-universal 700mV ORP reference suitable for a wide range of pool, spa and water treatment ORP sensing equipment, not only AstralPool and RolaChem.
Not all equipment is calibrated at 700mV. Some controllers and meters specify a different ORP reference value, and some use a two-point procedure requiring more than one solution. Check the reference value stated in your equipment's calibration procedure before ordering.
Why Calibrate an ORP Probe?
ORP probes can gradually drift as they age or become contaminated by normal pool water deposits. If the probe reading is incorrect, an automatic chemical controller may make dosing decisions using inaccurate information.
Calibration compares the probe against a known reference solution, allowing the controller reading to be checked and adjusted where required.
AstralPool recommends checking RolaChem pH and ORP probe calibration periodically, typically every 3 to 6 months, or earlier if required.
700mV ORP Calibration
This solution is used as a 700mV ORP reference. It is suitable for RolaChem controllers and any other equipment that specifies calibration against a 700mV ORP solution.
Important: ORP calibration solution readings are temperature-dependent. Follow the value and temperature information provided on the calibration solution label when carrying out calibration.
Basic RolaChem Calibration Procedure
- Place the RolaChem controller into the appropriate manual/off or calibration mode.
- Remove and clean the ORP probe as specified in the controller instructions.
- Rinse the probe thoroughly with clean water.
- Allow the cleaned probe to stabilise before calibration.
- Place the sensing end of the ORP probe into the 700mV calibration solution.
- Select the ORP calibration function on the controller.
- Allow the reading to stabilise and adjust/calibrate the controller to the reference value specified for the solution.
Always refer to the instructions for your particular ORP controller or meter before calibration.
ORP Calibration Solution FAQs
What is ORP?
ORP stands for Oxidation-Reduction Potential and is measured in millivolts (mV). In swimming pool automation systems, the ORP reading is commonly used as feedback by the controller when regulating sanitiser dosing.
Is ORP the same as a chlorine reading?
No. ORP does not directly measure chlorine concentration in ppm. It measures the oxidation-reduction potential of the water. ORP can be influenced by several water chemistry conditions, so normal pool water testing should still be carried out separately.
How often should a RolaChem ORP probe be calibrated?
AstralPool documentation recommends checking probe adjustment periodically, typically every 3 to 6 months, or sooner if required. Calibration should also be checked if the displayed ORP appears inconsistent with the condition or independent testing of the pool water.
Can I use this with an AstralPool RolaChem controller?
Yes. This is the Fluidra / AstralPool RolaChem 700mV ORP calibration solution, part number 600117. It is intended for compatible RolaChem ORP sensing and chemical control equipment.
Can I use this with a different brand of ORP probe or controller?
Yes, provided the equipment is calibrated at 700mV. The solution is a standard ORP reference and works with any brand of ORP probe, controller or meter whose calibration procedure calls for a 700mV value. Check your equipment's specified reference value before ordering.
Can I use it in a handheld ORP meter?
Yes, if the meter is calibrated against a 700mV ORP reference. Follow the meter manufacturer's calibration instructions.
Associated Names & Part Numbers
Fluidra 600117, AstralPool 600117, RolaChem 600117, Rola Chem ORP Calibration Solution, RolaChem ORP Calibration Fluid, AstralPool ORP Calibration Solution, 700mV ORP Solution, 700 mV Redox Calibration Solution, ORP Probe Calibration Fluid, ORP Sensor Calibration Solution, Universal 700mV ORP Calibration Solution.
To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.
This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.
Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.
Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.
Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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