Hanna Instruments HI1285-6 pH/EC/TDS Multiparameter Probe with CAL Check

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Hanna InstrumentsSKU: HY-4621-6

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Hanna Instruments HI1285-6 pH/EC/TDS Multiparameter Probe with CAL Check

3-in-1 Pre-Amplified Probe • pH + EC/TDS + Temperature • CAL Check Compatible • Built for Grow & Water Applications

The Hanna Instruments HI1285-6 is an OEM 3-in-1 multiparameter probe designed to measure pH, conductivity (EC/TDS), and temperature in a single rugged probe body—while enabling the CAL Check™ diagnostic feature when used with compatible meters. Built for demanding environments like hydroponics, greenhouses, environmental monitoring, water treatment, boilers, and cooling towers, this probe delivers stable, temperature-compensated readings where accuracy matters and conditions aren’t always clean or controlled.

Engineered specifically for the Hanna HI9813-6 series portable multiparameter meter, the HI1285-6 is the correct replacement probe when you want dependable measurements and CAL Check functionality in one complete sensor.

Why Choose the HI1285-6 Multiparameter Probe?

✔ One Probe, Three Measurements

Measure the key parameters you need for nutrient strength and water quality with one immersion:

  • pH
  • EC / TDS
  • Temperature (built-in sensor for compensation)

✔ CAL Check™ Compatible (Probe Diagnostics)

When paired with the HI9813-6 series meter, this probe allows use of the CAL Check™ feature—helping you confirm whether the probe needs to be cleaned, calibrated, or replaced, which can prevent costly mistakes from inaccurate readings.

✔ Pre-Amplified pH Electrode for Noise Resistance

The pH circuit includes an internal amplifier to reduce electrical noise that can come from pumps, motors, and equipment commonly found in grow rooms and industrial settings—improving stability on high-impedance pH measurements.

✔ Renewable Cloth Junction + Gel Electrolyte

The pH section uses a cloth junction and maintenance-free gel electrolyte, designed for consistent performance in real samples. The cloth junction can help maintain stable readings in fertilizer solutions and challenging water.

✔ Amperometric EC/TDS Sensor (Two Stainless Pins)

EC/TDS readings are measured via a two-pin amperometric sensor. As dissolved salts increase, conductivity rises—making it ideal for monitoring nutrient solution strength and general water quality.

✔ Built-In Temperature Sensor for Accurate Compensation

Since both pH and conductivity vary with temperature, the integrated temperature sensor helps ensure fast, compensated readings in both standards and samples.

✔ Durable Polypropylene Body

The probe’s polypropylene body is chemically resistant and built for portable use, helping protect sensors from bumps and harsh environments.

Compatibility

Designed for use with: Hanna HI9813-6 series portable multiparameter meter
Connector: DIN (7-pole cable)

Key Specifications

Reference Cell Single Ag/AgCl
Junction Cloth
Electrolyte Gel
Glass Type Low Temperature (LT)
Tip Shape Spherical (8 mm)
Optimum pH Range 0 to 13
Operating Temperature 0 to 50°C (32 to 122°F)
Max Pressure 0.1 bar
Body Material Polypropylene
Body Length/Overall Length 95 mm / 185 mm
Outer Diameter 16 mm
Cable 7-pole, 1 m (3.3 ft)
Amplifier Yes
Recommended Use Hydroponics, greenhouses, environmental monitoring, water treatment, boilers, cooling towers

Best For

  • Replacing a worn probe on HI9813-6 series meters
  • Hydroponic nutrient solution monitoring (pH + EC/TDS)
  • Greenhouse and agricultural water testing
  • Industrial and environmental water quality checks

Order Confirmation

As soon as your order is placed, an order confirmation will be sent to the email address you used to place the order. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for shipment we will submit the order for processing and arrange shipment. Please see current estimated lead times on the product page for each product.

Shipping

Most products ship within 1 to 3 business days. Some items might take longer as they are delivered from our warehouse in Vancouver. As soon as we receive your tracking number, we will send it over to you.

Free Shipping

Free shipping is available across all provinces throughout Canada for orders over 149$.

International Orders

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, you can email us at info@canadagrowsupplies.com for some more information on shipment. Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not Canada Grow Supplies Inc.

Cancellations

If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.9% (credit card), 3.5% (PayPal), 4.0% (PayPal International), 4.1% (American Express), or 6.5% (Shop Pay Installments or Sezzle) order cancellation fee after the order was received. We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, sometimes the cancellation request may not reach the warehouse in time before the product ships. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. If you purchased 'Route Package Protection', this can not be refunded after the order has shipped.

Returns

In order to make sure you are completely satisfied, we can send you a return label within 14 days of receiving the order. This is to guarantee that you are happy with the product. Some products might require a 10-25% restocking fee. Please visit our full return policy.

Why Canada Grow Supplies?

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1. We’ve had thousands of shipped orders and satisfied customers.

We started our business in 2020 with the intention of creating a one-stop shop for growing supplies without letting customers wait for their orders. We saw the potential to serve customers of this industry way better than they’ve been treated in the past.

2. We’re a small, Canadian, family-owned business.

Our small team overlooks every customer and their orders to ensure they are satisfied with their products. We answer the phone and website chat, and if we don’t, we get back to you within 6 hours or less! We even throw in some freebies at random.

3. Free Discreet Shipping Available in Canada

We offer free shipping on all orders over 149$ Canada-wide. Many companies have a weight limit for free shipping, we don’t!

4. 100% Lowest Price on the Market - Price Match Guarantee

We keep the best prices on the market at all times. If the price respects the companies’ lowest retail price, we will definitely price-match any other Canadian website.

5. Reliable International Shipping

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout.

6. Easy financing and interest-free payments

Finance your purchase within minutes without paying interest!

Sezzle: Buy what you want today and pay for it over four installments, interest-free. Look for the Sezzle button at checkout. Get approved up to $2,500.

7. We are authorized resellers with manufacturer’s warranty

You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.

8. Safe, Secure and Discreet Transactions

We accept major credit cards and debit cards, PayPal, Google Pay, Apple Pay, Sezzle, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.

9. Hassle-free returns

Just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason

10. Route Package Protection

Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer.

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