

Features:
- Three-point calibration: Automatically identify calibration solutions
- ATC function: Solve the problem of inaccurate measurements caused by changes in liquid temperature
- Lock function: The instrument will lock the reading result, making it easy to read and record
- Auto shut-off function
VIVOSUN pH Meter 3-in-1 Function Water Quality Tester
Easily test pH, TDS and temperature values. Take better care of your family's healthThe VIVOSUN pH meter is ultra-accurate (±0.1 pH accuracy), reliable and easy to use. You can measure 3 parameters (pH/TDS/Temp.) with this one meter.
With its automatic temperature compensation function, the VIVOSUN pH meter can accurately read the pH value of a sample across a broad temperature range of 32 °F-140 °F.
It has a wide variety of uses for water quality testing, water purification, aquaculture, hydroponics, lab work, pools & spas, colloidal silver testing, water treatment and so on.
How to Make A Standard Calibration Solution
Completely empty the powder into a clean 250ml glass beaker.
Add 250ml of PH Buffer Powder to the beaker.
Still until the powder has completely dissolved. PH solution accuracy is ±0.01PH.
Power on→Press the MODEL/CAL button → Adjust to pH mode→Put the electrode into pH4.01 / pH6.86 / pH9.18 standard solution→Press and hold the MODEL/CAL button for several seconds→The value of pH4.01 / pH6.86 / pH9.18 is no longer flashing, and the calibration of pH4.01 / pH6.86 / pH9.18 is completed.
How did we get our start?
Founded in California, Vivosun is a leading manufacturer of indoor horticultural equipment.
What makes our products unique?
We will help you manage your plants with scientific precision and control all aspects of your grow with high-quality technology and tools including durable growing enclosures;Whether you grow indoors or out, we provide everything you need to grow the highest quality plants in the shortest amount of time.
Why do we love what we do?
Our mission is to empower growers at all levels and of all types to grow the best of what they love.
1. Items are generally shipped out within 1-2 business days from our warehouse after your payment has been cleared (Sat. & Sun. & Public holiday excluded.)
2. We only offer local delivery in USA, which normally takes about 2-6 business days to arrive. If you need Express Mail Service, please contact us by eBay message.
3. We are not responsible for undeliverable address. We reserve the right to charge the shipping fee again for returned items due to wrong address supplied by buyer. Any non-received items caused by invalid address registered on PayPal are not in our full refund or replacement policy.
4. Our shipping rates include the cost of shipping, handling, packaging and related manpower costs.
Feedback & Detailed Seller Rating:
We are transnational corporations, only strive for 5 star positive feedback and will try our best to offer the best service to our buyer. Please email us before leaving negative feedback or open any dispute and please give us 2 business days to resolve the complaint to your satisfaction.
Returns:
Thank you for shopping at Vivosun. We want you to feel like every item you get from us is the perfect match for your grow space.
During the warranty period, if the product experiences quality issues, we provide two options:
1. Replacement or spare parts will be offered.
2. A partial refund of 20%-80% is available.
However, the above policy does not apply in the following situations:
1. Goods damaged due to improper operation;
2. Personal preference for the item;
3. Purchase of an incorrect item with an opened package.
If your item arrives to you damaged or defective, these exceptions do not apply. In those cases, we'll take care of it and work with you to find the best solution.
>Scan the box for damage.
>Make sure the product name and model number match your order confirmation.
>Remove the packaging and inspect the appliance.
>Rejecting Damaged Items:
>If you receive the wrong item or it arrives damaged, don't accept the delivery.Tell your delivery representative(s) and contact us so we can arrange for a replacement.Once you have installed the appliance, it cannot be returned.
The Return Address:
Vivosun Return Center, 1320 S Baker Ave Suite B, Ontario CA 91761, USA
REFUND OPTIONS:
What are my refund options?
All refunds will be credited in your original form of payment, whether that is your Paypal account or your bank account. Refunds are for the complete price of the unit, minus return shipping costs (if applicable), as per our "Return Policy".
Do we offer price match?
We do not offer price match, especially during major holiday sales events, including Black Friday, Cyber Monday, Mid-annual Sale, and etc.
We also do not offer price match against Amazon or any other platforms.
When will I receive my refund?
For credit card refunds, we'll begin issuing your refund once we've received notification that you have returned your item(s). Most banks will process the refund within 3-5 business days.

