Hanna Instruments HI7061L - General purpose cleaning solution for pH/ORP electrodes
Hanna Instruments HI7061L is a general purpose cleaning solution that is designed for pH/ORP electrodes. This type of electrodes is used to measure liquid properties such as acidity, alkalinity, and oxidation-reduction potential. During the use, mineral deposits, residues and other contaminants can be collected on the electrode's surface and around the reference junction.
Even if the electrode looks clean, a thin film of contamination can have an influence on the electrode's response time and measurements' accuracy. Hanna Instruments HI7061L helps to eliminate such deposits during electrode maintenance. This process ensures accurate measurements and helps to keep the electrode's sensing surface and reference junction in good condition.
It is important to note that HI7061L is a cleaning solution, but it is not a calibration buffer (the solution that provides a known value for calibrating the meter) and not a storage solution (solution that helps keep an electrode hydrated).
Description of the cleaning solution and its working principle
During the immersing of the pH/ORP electrode in a liquid sample, some substances from the liquid can stay on the sensing surface and around the reference junction. After some time, this layer can affect the electrode's performance or the ion movement across the junction.
HI7061L is specially designed to remove the contamination on the electrode's surface and it is designed for dissolving the mineral deposits and other surface coatings. According to Hanna Instruments instructions, HI7061L should be immersing in this solution for approximately 15-20 minutes. However, it can depend on the electrode and the contamination type.
Cleaning before the calibration process is especially important because calibration assumes the clean electrode and its perfect state. Therefore, the calibration of a contaminated electrode will not solve the problem of measurement inaccuracy and response time problems.
Main features and practical advantages
- General purpose cleaning: Suitable for the variety of routine electrode cleaning purposes where some contamination needs to be removed.
- Specifically designed for pH/ORP electrodes: The product is designed for the compatible pH/ORP electrodes.
- Measurement reliability support: Clean electrode helps to avoid the possible reasons of inaccurate readings and response time.
- Reference junction maintaining: Routine cleaning helps to prevent deposits accumulation and affects the electrode's normal performance.
- Sealed bottle: Airtight and tamper-evident bottle helps to protect the solution before the use.
- Information about the batch and expiration date: Every bottle has a lot number and expiration date.
Technical specifications
- Brand: Hanna Instruments
- Product code: HI7061L
- Product type: General purpose electrode cleaning solution
- Application: Cleaning of compatible pH/ORP electrodes
- Volume of the bottle: 500 ml
- Packaging: Bottle with airtight closure and tamper-evident seal
- Traceability: Lot number and expiration date
- Shelf life: Five years from manufacture for an unopened bottle according to Hanna Instruments.
- Cleaning method: Immersion, according to the instructions of the electrode.
- Routine cleaning time: Approximately 15-20 minutes, according to the electrode's instructions.
The HI7061L is provided as 500 ml bottle. Also, there is a smaller version of the cleaning solution called HI7061M.
Compatible applications and devices
The HI7061L can be used for routine maintenance of compatible pH/ORP electrodes in the laboratories and other places where such measurements take place, such as:
- Laboratory: Cleaning of the electrodes used for liquid analysis and testing.
- Water quality control: Removal of the residues from the electrodes that are used for water testing.
- Hydroponics and horticulture: Maintenance of pH electrodes that are used for checking irrigation water and nutrient solutions.
- Industry: Cleaning of compatible electrodes used for monitoring the liquid processes.
- Environmental tests: Maintenance of the electrodes that are used for environmental water testing.
- Routine measurements: Cleaning of compatible electrodes between testing sessions or before calibration.
HI7061L is a general purpose solution. If the contamination consists mainly of protein, fat, oil, or special agricultural contamination, there are special Hanna Instruments cleaning solutions for these purposes. In such cases, it is better to choose a cleaning solution that is suitable for the contamination rather than using the general purpose formula.
How to use the solution
Follow the cleaning instructions of the particular electrode. For routine cleaning, according to Hanna Instruments instructions, the immersion of the electrode in the HI7061L for approximately 15-20 minutes will help to dissolve the mineral deposits and other coatings.
For example, a typical maintenance process of the electrode is as follows:
- Read the instructions of the electrode manufacturer for the appropriate cleaning method.
- Immerse the electrode's sensing portion into the cleaning solution as described.
- Wait until the suggested time for cleaning expires.
- Take out the electrode and rinse it as instructed by the manufacturer.
- Place the electrode into a suitable storage solution if needed.Calibrate the device if it is required using a corresponding calibration buffer.
Do not contaminate the cleaning solution with the liquid samples and close the bottle securely. Read the expiration date of the bottle and follow the manufacturer's instructions for the electrode.
Cleaning solution versus calibration and storage solutions
These solutions have different purposes and cannot be used interchangeably.
- Cleaning solution: removes the deposits from the electrode surface.
- Calibration buffer: provides a known value for the calibration of a pH meter.
- Storage solution: keeps the electrode hydrated when it is not in use.
HI7061L is intended for cleaning of the electrodes and cannot be used as calibration or storage solution.
