Apera Instruments

APERA - PH8500-SL Premium Portable pH Meter for Soil (Direct Measurement)


Bulk/wholesale pricing available for this product:
call us or email us for volume quote.

PH8500-SL Portable pH Meter for Soil (Direct Measurement), Equipped with LabSen® 553 POM pH Electrode
  • Equipped with Swiss LabSen® 553 POM 3-in-1 pH/Temperature Spear Electrode, designed for direct soil pH measurement. Say goodbye to slurry making.
  • Intelligent Functions: Self-Diagnosis of out-of-range value and electrode invalidation, calibration reminders, calibration date checking, clock display, easy parameter setting
  • GLP standard data management, 500 data sets of storage, manual/auto storage, USB data output
  • Reliable Structure Design: Large white backlit LCD, soft silicone case gives you a comfortable grip, IP57 waterproof rating
  • Powered by AA batteries; the foldable stand also allows use as a benchtop meter

Apera Instruments PH8500-SL Portable pH Meter is designed for professional direct soil pH measurements. The equipped Swiss LabSen 553 3-in-1 PVC pH/Temp. Electrode adopts Polymer electrolyte, Long-Life reference system, and a unique blue spear sensor tip, making precise direct soil pH measurement easier than ever.

This pH meter has a ±0.01 pH accuracy in a range of 0-14 pH, and Temperature Range: -5 to 80°C (23 to 176°F), Auto Calibration with auto-recognition of up to 12 kinds of buffer solutions, Auto. Temp. Compensation, and supports stable reading/auto-hold display mode. The meter's digital filter technology improves response time and accuracy.

Intelligent Functions: Smart Self Diagnosis reminds of out-of-range measurement, incorrect calibration, and electrode invalidation. Other functions include calibration reminders, calibration date checking, easy parameter setting. GLP standard data management, 500 data sets of storage, manual/auto storage, USB data output.

Reliable Structure Design: Large white backlit LCD; foldable stand allows use as a benchtop meter; soft silicone case gives you a nice firm grip; connector protection cap, IP57 waterproof rating; Powered by 3 AA batteries.

The meter is RoHS and CE certified and comes with a 3-year warranty (6 months for the electrode).

How to direct-test soil pH?

  1. If the soil is dry, add a small amount of distilled or RO water to moisten the soil (do NOT add tap water since it will affect the pH value significantly). Ideally, wait 24 hours before you take a measurement.
  2. Insert the pH connector (the blue one) to the pH socket, and twist it clockwise to lock in; Insert the temperature connector to the temperature socket.
  3. Rinse the probe with distilled water/RO water before inserting it into the soil.
  4. If measuring outside of solution, rockwool or small pots, remove the top 5cm/2inch soil from the surface of the sample area. Insert the probe approximately 4 to 6 inches (10 to 15cm) into the soil samples from various locations (3 to 4), wait for the stable readings before recording (smiley face icon stays on the screen).
  5. Users can press the M+ button to save the stable readings on the meter. Then take the average of the measured data as the representative pH level of the sample area.
  6. Do NOT use extra force to insert the probe. If you feel like the probe can’t be inserted any deeper, stop inserting. The spear tip could break.
  7. Rinse off the soil residue thoroughly between tests with distilled water. Use the probe cleaning brush if needed.

Our experienced commercial team has helped supply hundreds of indoor, outdoor and commercial greenhouses projects in Canada and the United States.

Looking to get a quick quote? Contact us at support@wegrowbuds.co or call at 1 877 368-7099 to talk with a Growbuds sales representative. Otherwise please fill out the quick form below and we will be in touch as soon as possible.

United States Headquarters

2915 Ogletown Road
Newark, DE 19713, United States

Canada Headquarters

1270 Humber Pl, Ottawa, ON K1B 3W3, Canada.

Call Us

Toll Free: 1 877 368-709
Hours: 9AM - 5:00PM EST

Email Us


Frequently Asked Questions

You may also like

Recently viewed



Safe Checkout