GroStar GS1 pH Pen
GroStar GS1 pH Pen
GroStar GS1 pH Pen
GroStar GS1 pH Pen

GroStar GS1 PH/Temp (2-IN-1) Pen

Availability: In Stock
Brand: GroStar
GroStar GS1 pH/Temp (2-in-1) Pen The GroStar GS1 pH/Temp (2-in-1) Pen is a compact and reliable digital...
$92.81
$115.99
$92.81
Subtotal: $92.81

Lead Time

this products ships in 1-2 days

  • Seres
Description

GroStar GS1 pH/Temp (2-in-1) Pen

The GroStar GS1 pH/Temp (2-in-1) Pen is a compact and reliable digital testing meter designed for accurately measuring both pH levels and temperature in hydroponic systems, reservoirs, nutrient solutions, aquariums, irrigation water, and horticultural applications. Built for growers, hydroponic gardeners, greenhouse operators, and cultivation facilities, the GS1 provides fast, easy-to-read measurements to help maintain optimal nutrient balance and water quality.

Combining pH and temperature monitoring into one convenient handheld device, the GroStar GS1 helps simplify daily nutrient management while improving growing consistency and system performance. Its portable design, digital display, and user-friendly operation make it ideal for both beginner and professional growers.

Accurate pH management is critical for nutrient uptake in hydroponics and soil-based cultivation, while temperature monitoring helps growers maintain healthy root zone conditions. The GroStar GS1 delivers dependable readings for everyday water testing and nutrient solution monitoring.

Features

  • Measures both pH and temperature
  • Compact handheld 2-in-1 digital testing pen
  • Fast and accurate readings
  • Easy-to-read digital display
  • Ideal for hydroponics and nutrient reservoirs
  • Portable and lightweight design
  • Suitable for irrigation and water testing
  • User-friendly operation for beginners and professionals
  • Helps optimize nutrient absorption and plant health

Applications

  • Hydroponic systems
  • Reservoir nutrient testing
  • Irrigation water monitoring
  • Greenhouse cultivation
  • Soil and nutrient solution testing
  • Aquariums and water gardens
  • Indoor grow rooms
  • Commercial cultivation facilities

Specifications

Specification Details
Product Name GroStar GS1 pH/Temp Pen
Measurement Functions pH & Temperature
Display Type Digital LCD
Product Type Handheld Digital Meter
Application Hydroponics, Water Testing, Irrigation
Portable Yes
Calibration User Calibratable
Power Source Battery Operated

SEO Keywords

GroStar GS1 pH pen, GroStar pH and temperature meter, 2 in 1 pH temp pen, hydroponic pH meter, digital pH tester, nutrient solution tester, hydroponic water tester, irrigation water pH meter, greenhouse pH meter, reservoir temperature tester, portable pH pen, cultivation water testing meter, pH temp monitor for hydroponics

Frequently Asked Questions

What does the GroStar GS1 pH/Temp Pen measure?

The GroStar GS1 measures both pH levels and temperature in water, nutrient solutions, and hydroponic reservoirs.

Is the GroStar GS1 good for hydroponics?

Yes. The GS1 is designed for hydroponic growers who need accurate pH and temperature monitoring for nutrient management and plant health.

Why is pH monitoring important in hydroponics?

Proper pH levels help plants absorb nutrients efficiently. Incorrect pH can lead to nutrient lockout and reduced plant performance.

Can the GroStar GS1 test nutrient reservoirs?

Yes. The meter is commonly used for testing hydroponic reservoirs, irrigation systems, and nutrient solutions.

Is the GroStar GS1 portable?

Yes. The compact handheld design makes it easy to carry and use in grow rooms, greenhouses, and cultivation facilities.

Does the GroStar GS1 require calibration?

Yes. Like most digital pH meters, periodic calibration is recommended to maintain accurate readings.

Can the GS1 measure water temperature?

Yes. The device includes built-in temperature monitoring functionality.

Is the GroStar GS1 suitable for beginners?

Yes. The simple digital display and easy operation make it suitable for both beginner and professional growers.

What industries commonly use pH and temperature pens?

These meters are commonly used in hydroponics, greenhouse cultivation, indoor farming, aquariums, horticulture, irrigation management, and commercial agriculture.

Can the GroStar GS1 help improve plant growth?

Maintaining proper pH and water temperature can help optimize nutrient uptake, root health, and overall plant performance.

Lab grade instruments designed specifically for growers!

Includes: 
• 2-year warranty (instrument)
• 1-year warranty (probe)
• pH 7 & pH4 calibration solution (50ml bottle each)
• KCL storage solution (10ml bottle)
• Lanyard and user manual

Features:
• Measures pH and temperature
• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance
• Easy-to-use design and fast calibration adjustment
• Double junction replaceable probe, so you don’t have to discard the entire pen when the probe reaches its end of life
• Large 3-color backlit screen gives you clear information
• IP67 waterproof rating
• Powered by AAA batteries with auto off function
• Automatic temperature compensation


Shipping & Returns
We ship daily from Monday through Friday, and shipments are processed within 24-48 hours of cleared payment.
Orders placed over the weekend are processed on the next business day.

Free Shipping

Specific Vendors offer free shipping over a certain amount. This will be automatically applied during checkout.

Orders over $10,000 before tax qualify for free shipping!

Free Shipping only applies to domestic US (lower 48 states -- sorry, Alaska & Hawaii) shipments.

Shipping Rates

Shipping rates are calculated during checkout based on the weight, dimensions, and destination of the ordered items. We do our best to calculate the exact cost.

Updated 5/1/2023:

Please note that due to the higher shipping costs and larger dimensions of some of our products, our shipping calculator may not always provide an accurate shipping estimate. In these cases, we will reach out to you with an updated shipping quote after you place your order. If you have any questions about shipping costs, please don't hesitate to contact us before placing your order. We apologize for any inconvenience and appreciate your understanding.

Seres reserves the right to notify you of any additional shipping charges. We partner with multiple vendors and locations, which can alter shipping rates. In addition, there are conditions out of our control (rural areas, fuel surcharge, multiple shipments). If this occurs, you will be contacted immediately and have the right to modify or cancel your order for a full refund. 

Address Change / Order Cancellation

If you need to change the shipping address, please get in touch with us at support@seresag.com or call 1-877-237-3754. 

Once the order is shipped, we will do our best to perform an address intercept. You will be charged an Intercept Fee imposed by the shipping carrier. This fee varies from each carrier. Please note not all shipping carriers will accept address intercept changes.

If an order is canceled in transit, you are solely responsible for all shipping charges incurred by the Shipping Carrier.

Shipping charges will not be refunded.

Tracking

Once an order has been shipped, we will send an email and text message on file with the tracking number. If your order is fulfilled from multiple vendors or locations, you will receive shipment confirmations with tracking for each shipment. 

In addition, you can check the status of your order through the order confirmation email or within your profile page under Track Order.

Freight (LTL)

Scheduled appointments deliver freight shipments. You are responsible for inspecting for damage incurred in transit and signing before the driver leaves. DO NOT accept the shipment if there is any damage. If your freight shipment arrives damaged, contact us immediately.

Once delivered, we cannot reimburse paid freight charges or refund products.

Some restrictions may apply; Hawaii and Alaska do not qualify for free shipping offers.

Damaged Shipment

It rarely happens, but once in a while, products are damaged during Shipping. Therefore, please scrutinize all shipments for damaged or missing items before signing for them (if required).

The shipping carrier is responsible for items damaged during Shipping, which will most often be UPS, FedEx, or USPS. 

If assistance is needed, please get in touch with us immediately. Seres cannot promise refunds or replacements if this is not done within 72 hours. 

By signing your name and accepting shipment for a Freight(LTL) order, you get no reimbursement of freight charges, order costs, or any other charges incurred.

Lead Times

Please note that there is up to a 7-day processing period for orders containing Hawthorne products.

Signature

Due to the valuable contents of many products we sell,  the carrier may need a signature upon delivery. Please understand that this is a measure our company took to ensure safe delivery and fraud protection.

Third-Party Carriers will attempt to deliver a signature-required order three times. 

Please follow up with the carrier for assistance if a missed-delivery note is received.

If assistance is needed, please get in touch with us, so we can help contact the carrier. 

Shipping costs will not be refunded for missed shipments.


Seres is not responsible for any missing, lost, or stolen items.
 

At this time, we do not ship to post office boxes or APO/FPO addresses.  

For more information, please read our Terms of Service.

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