Hanna Instruments HI1285-7 pH/EC/TDS Multiparameter Probe (for HI9814)

Hanna InstrumentsSKU: BIO-69141

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Hanna Instruments HI1285-7 pH/EC/TDS Multiparameter Probe (for HI9814)

3-in-1 Pre-Amplified Probe • pH + EC/TDS + Temperature • Renewable Cloth Junction • Quick Connect DIN

The Hanna Instruments HI1285-7 is an OEM 3-in-1 multiparameter replacement probe engineered specifically for the Hanna GroLine HI9814 portable meter. Built for the demands of hydroponics, greenhouses, and agricultural water testing, this rugged probe measures pH, conductivity (EC), TDS, and temperature in one durable polypropylene body—so you get fast, stable, temperature-compensated readings right at the reservoir, tank, or feed line.

Designed for nutrient solutions and real-world grow environments, the HI1285-7 features an amplified pH electrode to reduce electrical noise, a renewable cloth junction to extend probe life, and an amperometric EC/TDS sensor with stainless steel pins for consistent conductivity measurements.

Why Choose the HI1285-7 Replacement Probe?

✔ Made for HI9814 (Correct OEM Compatibility)

This probe uses a Quick Connect DIN connector and is designed to be used with Hanna’s HI9814 portable multiparameter meter. It’s the right choice when you need a replacement probe that fits correctly and restores original performance.

✔ One Probe, Multiple Measurements

In a single immersion, the HI1285-7 measures:

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

✔ Pre-Amplified pH Electrode for Noise Resistance

Grow rooms often have electrical interference from pumps, motors, ballasts, and controllers. The built-in amplifier helps reduce noise on high-impedance pH signals, improving stability and confidence in readings.

✔ Renewable Cloth Junction (Better for Nutrient Solutions)

The pH section uses a cloth junction with gel electrolyte. When readings become drifty or slow, the cloth can be extracted to expose a fresh surface, helping restore response time and extending usable probe life.

✔ Amperometric EC/TDS Sensor (Two Stainless Steel Pins)

EC and TDS readings are taken using a two-pin amperometric sensor. Higher dissolved salts (fertilizer ions) increase conductance, giving you a practical, accurate picture of nutrient strength.

✔ Built-In Temperature Sensor for Accurate Compensation

Temperature affects both pH and conductivity. The internal sensor provides fast temperature readings so the meter can automatically compensate EC/TDS and support stable pH measurement across changing conditions.

✔ Rugged Polypropylene Body

Durable, chemically resistant, and designed for portable use. Protective fins around the spherical glass bulb help reduce breakage from accidental bumps or drops.

Key Specifications

Reference Cell Single Ag/AgCl
Junction Cloth (renewable)
Electrolyte Gel (maintenance-free)
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)
Connector Quick Connect DIN (HI9814 specific)
Amplifier Yes (pre-amplified pH)

 

Recommended Uses

  • Hydroponics & fertigation nutrient solutions
  • Greenhouse reservoirs and tanks
  • Environmental monitoring
  • Water treatment, boilers, and cooling towers (where supported by the meter setup)

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.

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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.

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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

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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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