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84 µS/cm conductivity standard.
APERA INSTRUMENTS / CONDUCTIVITY STANDARD / AI1132-S / AI1132 / AI1132-L
Apera’s 84 µS/cm standard calibrates conductivity meters, testers and electrodes at the low end of the range, where drinking water, RO permeate and other low-conductivity samples sit. Apera states 84 µS/cm with an accuracy of ±1 µS/cm at 25°C (77°F).
Each batch is traceable to NIST Standard Reference Material 999c and produced under ISO/IEC 17025 quality control. It works with any brand of conductivity tester or meter that supports 84 µS/cm calibration. Choose a 4 oz, 8 oz or 16 oz bottle from the size menu.
Calibrate with the standard closest to the conductivity of your samples. Each card opens that standard, in 4, 8 or 16 oz.
AI1132-S / AI1132 / AI1132-L
Low range
±1 µS/cm. For low-conductivity water and the bottom of the range.
AI1130-S / AI1130 / AI1130-L
General range
The most common conductivity calibration point.
AI1131-S / AI1131 / AI1131-L
High range
For brackish water, nutrient concentrates and other high-conductivity samples.
AI1134-S / AI1134 / AI1134-L
Very high range
±0.4 mS/cm. For brines, seawater concentrates and the top of the range.
A conductivity meter is most accurate near the point it was calibrated. Use 84 µS/cm when your samples sit in this part of the range, and check the reading against a second standard if your samples span a wide range.
Rinse the probe with deionized water, then with a little of the standard, before calibrating in fresh standard. Pour what you need into a clean cup, close the bottle straight away, and never pour used standard back.
All three sizes carry the same 84 µS/cm standard. Apera rates it for 18 months unopened but only one month once opened: a low standard is easily changed by contamination and by carbon dioxide from the air. Buy the size you will use within a month of opening, and never pour used standard back.
Conductivity rises with temperature. Calibrate with automatic temperature compensation on, or read the reference value for your temperature from the bottle label.
Apera provides a certificate of analysis by request, and an MSDS is available.
For pH and conductivity together, see the AI1105 four-solution kit or AI1112 six-solution kit. Clean fouled probes with Apera electrode cleaning solution.
84 µS/cm ±1 µS/cm at 25°C (77°F).
Traceable to NIST SRM 999c; produced under ISO/IEC 17025 quality control.
18 months unopened; 1 month once opened. Store at room temperature, away from direct sunlight, with the cap tight.
Choose the size you will use before the opened-bottle limit or expiry date. The solution is identical across 4 oz, 8 oz and 16 oz.
Yes, with any brand of conductivity meter, tester or electrode that supports calibration at 84 µS/cm.
Check the size and catalog number (AI1132-S / AI1132 / AI1132-L) against your meter, electrode and calibration routine, then return to the live price and ordering controls.
Shelf life: 18 months unopened; 1 month once opened.
Store at room temperature, away from direct sunlight, with the cap tightly closed.
Apera prints the expiration date and temperature reference chart on each bottle. A safety data sheet and certificate of analysis are available from Apera on request; contact Blue Tiger Scientific with your order number and lot.
email us here: info@bluetigerscientific.com or live chat
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