The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. This modern looking meter is only 0.7" thick and extremely ergonomic, fitting comfortably in your hand. The HI98118 has a very large easy to read LCD display that shows both pH and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one or two point calibration.
Quick Calibration Mode using Hanna Quick Cal pH/EC Calibration Solution
Cloth junction providing a larger surface area than a standard ceramic junction
The HI98118 GroLine pocket pH Tester is an affordable way to measure the pH of hydroponic nutrient solutions. The maintaining of an optimal pH is essential to maximize optimum growth. The general rule of thumb is that as pH increases the solubility of minerals and nutrients decrease. It is important that nutrients are soluble for plants to uptake and use for growth. The pH of the nutrient solution can also affect the bacteria that fix nitrogen for the plant to use. Every plant has optimum pH levels for growth. Below is a table for the ideal pH range for a variety of plants.
The HI98118 can be used to measure the pH in soils as well as nutrient solutions. The North Carolina State University has outlined a procedure known as Pour Through Sampling Method. This method is used for container plants in which 50 ml of leachate is collected from a thoroughly watered plant and then tested.
To measure the pH of soil as a slurry the USDA recommends a mixture of 1 part soil to 1 part water. The slurry is allowed to rest for 10 minutes so that the solids will settle out and the pH of liquid above can be measured.
The HI98118 is an advanced meter while maintaining simplicity. The front of the meter has two buttons. One is for turning the meter on and off while the other is used to enter the calibration mode. There is a third button in the battery compartment that allows the user to customize the meter to their preference. Customization includes temperature readout in oC or oF, automatic shut off selectable from 8 minutes, 60 minutes or disabled, and lastly the choice of using Hanna's Quick Cal pH/EC standard or traditional buffers values of pH 4.01, 7.01 and 10.01.
The HI98118 features a cloth junction. The reference junction of a pH electrode, also known as a salt bridge, provides an electrical pathway between the internal reference cell and the sample. A cloth or fiber wick juctionprovides a larger surface area than a standard ceramic junction.
Built in temperature sensor for Automatic Temperature Compensated measurements.
Cloth junctionproviding a larger surface area than a standard ceramic junction.
Stability indicator that disappears once a stable reading is obtained .
Automatic calibration to one or two points at a push of a button.
Uses Hanna's Quick Cal pH/EC standard with a pH value of 6.86. The standard can also be used to calibrate conductivity meters to 5,000 μS/cm .
Battery % level remaining displayed at start up.
Low battery indicator that is displayed when less than 10% battery life is remaining.
Automatic, one or two-points (pH 4.01, 7.01, 10.01); one-point calibration using HI5036 or HI50036P Quick Cal calibration solution
pH Temp Compensation: automatic, 0 to 50°C (32 to 122°F)
Temperature Range:0.0 to 50.0°C/32.0 to 122.0°F Temperature Resolution: 0.1 °C / 0.1 °F Temperature Accuracy (@25°C/77°F): ±0.5 °C / ±1.0 °F Automatic Shutoff: 8 minutes, 60 minutes, or can be disabled Battery Type/Life: CR2032 Li-ion / approximately 1000 hours of continuous use
Environment: 0 to 50 °C (32 to 122 °F) RH max. 100% Dimensions:160 c 40 x 17 mm (6.3 x 1.6 x 0.7’’) Weight: 2.6 oz. Ordering Information:
HI98118 GroLine pH tester, Quick Cal calibration sachets (3), electrode cleaning solution sachet, battery, instruction manual and quality certificate.
Warranty: 1 year
As soon as you place the order, an order confirmation will be emailed to you. 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.
***We cannot change the shipping address after the order is placed.***
Most products ship within 2 to 3 business days from the date of your order (unless indicated on the product page). Some items take a bit longer to ship since they are built to order (i.e. ChilLED Tech, Trimmers, etc). We will send you tracking information as soon as it is available. If a week has gone by and you do not have tracking information yet, please reach out to us.
We are based in Portland, Oregon with warehouses nationwide. We offer FREE shipping in the lower 48 states (sometimes to HI and AK, too) via FedEx, UPS, USPS or other major couriers (product/brand dependent). Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method and we will get you a quote.
After the order is processed, allow 2 to 7 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to PO boxes in some cases. We recommend using a street/residential address instead.
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, please email us to receive a shipping quote for lights shipped outside of the USA. You may also place an order on our online store for items that require a quote and we will notify you via email on the exact shipping costs.
Some items/brands can be shipped for free.
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 LED Grow Lights Depot.
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.
All EZTrim orders are final and non-refundable or returnable.
See our full Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 5-25% restocking fee (brand dependent) may apply for returns within the dates of the return policy. Reach out to us for exact return instructions and restocking fees for the item(s) that you purchased since these vary by brand. 'Route Package Protection' cannot be refunded if an item is returned en route or after you receive it.
If you have any questions or would like to check the availability of an item, you may email us here or call us at (888) 611-9305. Thank you for shopping with us.
We now offer Route package protection to help cover the cost of lost, damaged, or stolen packages.
What is Route Protect?
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.
Purchased Route Protect and need to file a shipping issue? File here
General shipping, tracking, and issues questions
Route Refunds vs Reorders
Refunds: When refunding an item, Route covers the subtotal of the order. Shipping costs, taxes, and the Route premium are not included.
Reorders: Route will reorder the items, but please note that items can only be replaced depending on in-stock availability. All reorders have Route Shipping Protection added, for free!
Issues can be approved no earlier than 5 and no later than 15 days from when it was marked delivered Orders over $100 USD require a police report
Stuck In Transit (Lost)
Issues can be approved no earlier than 7 days and no later than 30 days from the last update (US), 60 days from order dateIssues can be approved no earlier than 20 days and no later than 30 days from the last update (International), 60 days from order date
File issues for damaged items with photos of the package and item (required) and no later than 15 days from when it was marked delivered.
What if my order never arrives or is stolen?
To protect your order against loss or theft, add Route package protection at checkout.
When you add Route Protect, you can easily file an issue for a lost, stolen, or damaged package. When you file an issue, it will be reviewed for approval for a reorder or refund within 1-2 business days.
What if my order is damaged?
To protect your order against damage that occurred during shipping, add Route Protect (package protection) at checkout.
When you add Route Protect at checkout, you can easily file an issue for a lost, stolen, or damaged package. When you file an issue, it will be reviewed for approval for a reorder or refund within 1-2 business days.
If your order has defects or you suspect it was damaged during manufacturing, please reach out to us here and we will be happy to work with you to remedy the situation.
How do I file a shipping issue for my lost, stolen or damaged order?
If you insured your order with Route Protect at checkout, you will receive a confirmation email from Route with a link to file a shipping issue.
You can also file a shipping issue on Route’s app or via the web here.
Yes! When you insure your orders with Route Protect, stolen items are eligible for reorders or refunds.
What if I need to cancel or return my order?
LED Grow Lights Depot can only reimburse you for Route package protection if the order has not shipped yet. If an order is cancelled en route or if you want to return your order, we cannot refund you for the Route package protection. No partial refunds for Route will be granted.
Yes. Route is a licensed insurance company with SEG Insurance Ltd. as its partner.
1) Thousands of Successfully Shipped Orders and Thrilled Customers
We have been in business since 2014 and are a highly-trusted online retailer offering honest grow advice and top-of-the-line LED grow lights and other grow/harvest/extraction equipment. We have thousands of 5-STAR PRODUCT REVIEWS from satisfied customers.
2) Small, Family-Run, Veteran-Owned Business
Founder/Owner Erik H. overseas that every customer is 100% satisfied with their purchase. If something is wrong, we will make it right, guaranteed! Call, email, or message us anytime and we will get back to you in about 1 business day or less (typically with-in minutes or hours during normal business hours). We have your back!
3) Free Discreet Shipping in the USA
We offer FREE shipping in the lower 48 states via FedEx, UPS, USPS, or other popular couriers. We can ship most other products to Hawaii and Alaska for free too.
4) Reliable International Shipping Available
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.
Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery.
5) No Sales Tax in Some States
Forget shopping locally or on other popular retail websites that charge tax. You can save a lot of money when buying though us since we do not charge tax in some states.
6) 100% Low Price Guarantee
We strive to ensure that we offer the absolute best prices online. Rest assured that you are receiving the best online price when you shop with us.
If you find a better price online before or after you order from us (for up to one week), we will match or beat the competitor's price.
Although rare, we may refuse to offer a price match in which we incur a loss.
7) Easy Interest-Free Financing
Finance your purchase in minutes! See our available financing options below:
PayPal Pay in 4: Choose PayPal at checkout then select Pay Later before selecting Pay in 4. Get a decision in seconds and make your first payment to complete the purchase. Make the remaining 3 payments - one every two weeks, in the app or online.
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8) 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. LEARN MORE.
9) We are Authorized Dealers offering a 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.
10) Safe, Secure, Discrete Transactions
We accept major credit cards and debit cards, PayPal, Google Pay, Apple Pay, Sezzle, ShopPay, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.
11) Hassle-Free Returns
And just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason. See our FULL RETURN POLICY for full details.