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Pre-Amplified pH Electrode
The pH electrode circuit has a built-in amplifier that serves to reduce the effects of electrical noise on the high impedance pH measurement. Electrical noise can come from motors and pumps that are common in greenhouses. The single reference junction design of the pH electrode has a cloth junction that allows ion movement between the inner gel electrolyte and the sample being measured. The advantage of the cloth junction is that it can be extracted from the probe, exposing a fresh surface when readings become drifty or erratic. These features make this probe ideal for use in fertilizer solutions.
Amperometric EC/TDS Sensor
EC/TDS readings are performed by a two-pin amperometric sensor. An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins determines the amount of dissolved ionic solids present.
Built-In Temperature Sensor
pH and EC/TDS readings must be temperature compensated in order to obtain accurate results. The built-in temperature sensor of the HI1285-7 provides a speedy temperature reading which is then used to adjust the pH and EC/TDS results accordingly.
Polypropylene Body
The polypropylene body of the HI1285-7 houses all three sensors within a sturdy, single body design. This body material is suitable for a wide range of applications and excels in measurements with portable meters due to its durability. The fins around the spherical glass pH bulb minimizes breakage due to accidental bumping or dropping of the electrode. The polypropylene plastic is a high-quality plastic that is chemically resistant to many aggressive chemicals.
Quick Connect DIN Connector
The HI1285-7 uses a Quick Connect DIN connector that makes attaching and removing the probe simple and easy. This type of connector is generally proprietary to the meters they are supplied with. The HI1285-7 is designed for use with Hanna’s HI9814 GroLine hydroponic waterproof pH/EC/TDS/Temperature portable meter.
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The Grow Depot accepts returns on unused, unopened items within 14 days of delivery with receipt or proof of purchase. You will be refunded once the item has been received and found to be in unused/unopened condition. You are responsible for return shipping fees.
Within 5 business days of The Grow Depot receiving the return a refund will be issued back to the original payment method.
A refund confirmation email will be sent to the email address provided at checkout once the refund has been processed. Your financial institution may take added time to process the refund to your account.
There is no return, refund or exchange on nutrients and special order items.
Before returning any items, please contact us to request a Return Authorization Number (RMA).
Items sent back without authorization may not be refundable.
Customer Service is very important to The Grow Depot, if there is anything wrong with your order please contact us within 14 days of delivery so we can make it right.
The Grow Depot reserves the right to reject returns which do not comply with our return policy.
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