CPS91D Spare Parts List Overview
This article provides a list of spare parts and consumables for the CPS91D series pH measurement system, including sensors, electrode protection caps, standard buffer solutions, and electrolyte. These accessories are used to ensure measurement accuracy and extend electrode life, suitable for industrial process analysis and laboratory environments.
Sensors and Accessories
Sensors and Mounting Accessories
Sensors are used to distribute measurement signals to the measurement loop and need to be used with sensor clips and labels. Order number 71038228 includes 100 sensor clips, each with a printable label for on-site identification and management.
- Order number: 71038228
- Specification: Sensor, used to distribute sensors to the measurement loop
- Includes: 100 sensor clips with printable labels

Electrode Protection Caps
CPSxx Electrode Protection Cap
Electrode protection caps are used to protect pH sensors from damage during storage and transportation. Order number 71538217 provides 20 protection caps, suitable for CPSxx series pH sensors.
- Order number: 71538217
- Specification: CPSxx electrode protection cap
- Quantity: 20 pcs/pack
pH Standard Buffer Solutions
CPY20 pH Standard Solution
CPY20 pH standard buffer solutions are traceable to PTB and NIST standard reference materials and come with a calibration certificate. This buffer solution is used for calibration of pH electrodes to ensure measurement accuracy. Available in various pH specifications, users can choose according to their needs.
- Model: CPY20-
- Specification: pH standard buffer solution, traceable to PTB and NIST, with calibration certificate
- Available pH values: 1, 2, 9 (and codes 01, 02, 10, 50, 75, 99, etc.)
- Packaging codes: A, C, E, G, I, K, M, Y (corresponding to different volumes)
| Code | pH Value | Description |
|---|---|---|
| 01 | 1.00 | Strongly acidic buffer |
| 02 | 2.00 | Acidic buffer |
| 10 | 10.00 | Alkaline buffer |
| 50 | 5.00 | Weakly acidic buffer |
| 75 | 7.50 | Neutral to slightly alkaline buffer |
| 99 | 9.99 | Alkaline buffer |

KCl Electrolyte
CPY4 KCl Electrolyte
CPY4 KCl electrolyte is suitable for liquid-filled electrodes, maintaining stable internal electrolyte and ensuring measurement accuracy. Available in various packaging specifications to meet different maintenance needs.
- Model: CPY4-
- Specification: KCl electrolyte, for liquid-filled electrodes
- Available packaging: 1, 2, 3, 4, 5, 6, 7 (corresponding to different volumes)
Selection and Ordering Recommendations
To ensure stable operation of the measurement system, it is recommended to regularly inspect and replace sensors, protection caps, standard solutions, and electrolyte. When ordering, please verify the order number and specifications. If you have any questions, please contact the supplier.
- Sensor: 71038228 (includes 100 sensor clips)
- Protection cap: 71538217 (20 pcs/pack)
- pH standard solution: CPY20- (multiple specifications available)
- Electrolyte: CPY4- (multiple specifications available)