HI70031G is a high quality 1413 uS/cm conductivity standard designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.

• Supplied with Certificate of Analysis
• Single-use sachets for convenience.
• Perfect for use with GroLine testers and portable meters!

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI70039G is a high quality 5000 uS/cm conductivity standard designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.

• Supplied with Certificate of Analysis
• Single-use sachets for convenience.
• Perfect for use with GroLine testers and portable meters!

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7039-023 is a GroLine 5,000 µS/cm conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of conductivity standards have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Temperature chart of the actual µS/cm value at various temperatures printed on each bottle
• Air tight bottle with tamper-proof seal to ensure quality

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 5 units.

HI70300-012 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated.

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI70300-023 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated.

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI70300-050 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated.

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 5 units.

HI7061-012 is the GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna’s cleaning solutions eliminate impurities and residues that are left on electrode surfaces when immersed in samples during measurement or when stored incorrectly. Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and to prevent any clogging of the junction.

• Specially formulated for cleaning electrodes
• Air tight seal to ensure quality
• Expiration date and lot number

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7061-023 is the GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna’s cleaning solutions eliminate impurities and residues that are left on electrode surfaces when immersed in samples during measurement or when stored incorrectly. Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and to prevent any clogging of the junction.

• Specially formulated for cleaning electrodes
• Air tight seal to ensure quality
• Expiration date and lot number

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7061-050 is the GroLine general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna’s cleaning solutions eliminate impurities and residues that are left on electrode surfaces when immersed in samples during measurement or when stored incorrectly. Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and to prevent any clogging of the junction. The HI7061-050 is for 500 mL of general purpose cleaning solution.

• Specially formulated for cleaning electrodes
• Air tight seal to ensure quality
• Expiration date and lot number

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7010-023 is a high quality pH 10.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 2 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.02 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7010-050 is a high quality pH 10.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 2 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.02 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle

HI70004G is a high quality pH 4.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.

• Supplied with Certificate of Analysis
• Single-use sachets for convenience.
• Perfect for use with GroLine testers and portable meters!

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 5 units.

HI7004-012 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.02 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7004-023 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• • Supplied with Certificate of Analysis
  • Accuracy of +/- 0.02 pH @ 25°C
  • Temperature chart of the actual pH value at various temperatures printed on each bottle

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 2 units.

HI7004-050 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.02 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle

HI70007G is a high quality pH 7.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on-the-go testing, fitting easily into your pocket or carrying case.

• Supplied with Certificate of Analysis
• Single-use sachets for convenience.
• Perfect for use with GroLine testers and portable meters!

ONLY AVAILABLE WITH MINIMUM QUANTITY
The product comes with minimum quantity of 5 units.

HI7007-012 is a high quality pH 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• Supplied with Certificate of Analysis
• Accuracy of +/- 0.02 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each bottle