Apera Instruments
0 ratings
Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe
genuine image
Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe
Experience high accuracy and durability with the GroStar GS4 pH/EC/ppm Combo Pen replacement probe.
Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe
Item #: 86098305

Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe

Item #: 86098305

LAK 1607685

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Order now and get it around Thursday, July 30
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Experience high accuracy and durability with the GroStar GS4 pH/EC/ppm Combo Pen replacement probe.
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Dual Functionality
The GS4-E probe effectively measures both pH and EC, providing convenience and accuracy for users who require precise readings in hydroponics or soil testing.
Durable Design
Engineered with robust materials, this probe ensures long-lasting performance, minimizing the need for frequent replacements and offering reliable measurement through various conditions.
Easy Calibration
User-friendly calibration process simplifies maintenance, enabling users to obtain accurate readings quickly, thus improving efficiency in managing their growing environments.

Product Details

Shop Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe online at a best price in Laos. B0BGQJKLVM
Item Weight0.3 lbs (140 grams)

Who Should Buy?

Suitable For
  • Hydroponic Growers

    Ideal for hydroponic growers needing reliable pH and EC readings for nutrient management and plant health.

  • Research Laboratories

    Suitable for laboratories conducting experiments requiring precise pH and EC measurements with high accuracy.

  • Environmental Monitoring

    Great for environmentalists monitoring soil and water quality, ensuring accurate readings in various conditions.

Not Suitable For
  • Casual Users

    Not suitable for casual users who may not require frequent or precise measurements in gardening.

Product Description

Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe used for?

    Answer: The Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe is designed for accurately measuring the pH and electrical conductivity (EC) levels in various solutions. This versatile probe is particularly useful in fields like hydroponics, aquaculture, and laboratory settings. Understanding pH and EC readings is crucial for maintaining optimal growth conditions for plants and ensuring the health of aquatic life. For example, growers monitor pH and EC to optimize nutrient solutions, ensuring plants receive the necessary elements for healthy growth.
  • Question: How can I use the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe?

    Answer: Using the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe is straightforward. Simply connect it to a compatible meter, submerge the probe into the solution being tested, and allow it to stabilize before reading the measurements. It's essential to calibrate the probe with standard solutions for accurate results. This probe is ideal for gardeners checking soil solutions, students conducting lab experiments, or scientists performing precise water quality tests, thereby ensuring reliable monitoring of water or nutrient solution metrics.
  • Question: Can I calibrate the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe?

    Answer: Yes, calibration is an essential process for the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe to ensure accuracy in measurements. It typically involves using standard buffer solutions for pH calibration and conductivity standards for EC calibration. This adds to the probe’s versatility and reliability. Calibration is especially important in professional settings, such as laboratories or greenhouses, where precise measurements directly affect outcomes, like crop yield or experimental results.
  • Question: What are the maintenance tips for the GS4-E Replacement probe?

    Answer: Maintaining the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe is crucial for longevity and accurate readings. Rinse the probe with distilled water after use and store it properly in a storage solution when not in use. Avoid letting the glass bulb dry out, as this can impair its function. Regular checks on the probe’s condition can prevent unexpected issues, making it ideal for users who regularly monitor solutions, such as agricultural professionals or researchers.
  • Question: What makes the GS4-E probe different from other probes?

    Answer: The Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe stands out due to its dual functionality in measuring both pH and EC, thus eliminating the need for multiple instruments. This combination provides comprehensive data for users in hydroponics and environmental testing. Additionally, its design includes features like temperature compensation, making it robust and suitable for variable conditions. This is ideal for hydroponic gardeners who need precise nutrient monitoring and for aquarists ensuring water quality in fish tanks.
  • Question: Is the GS4-E probe suitable for all types of liquids?

    Answer: While the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe is versatile, it is essential to use it in compatible liquids. It is ideal for use in nutrient solutions, water, and many liquid fertilizers, but may not perform well in viscous solutions or oils. Users should ensure the probe's compatibility with the liquid being measured to achieve accurate readings. For example, hydroponic farmers will find it effective for testing nutrient-rich water, while laboratory technicians might use it for aqueous solutions.
  • Question: How do I know when to replace the GS4-E Probe?

    Answer: The need to replace the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe can be determined by several factors. Signs include inconsistent readings, failure to calibrate properly, or visible physical damage to the glass bulb. Regularly monitoring probe performance allows users to identify when it’s time for a replacement, ensuring continued accuracy. This is particularly critical for scientists and agriculturalists who rely on precise measurements for experimentation and crop management.
  • Question: Can I use the GS4-E Probe for outdoor applications?

    Answer: Yes, the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe is suitable for outdoor applications, provided it is adequately shielded from extreme temperatures and contaminants. Although it's designed for versatility, some precautions are necessary, such as protecting it from direct sunlight and harsh weather elements. Gardeners and environmental scientists often utilize it for tests in natural water bodies or soil analyses, making it a valuable tool in both agricultural and ecological studies.
  • Question: Where can I buy Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe in Laos?

    Answer: You can buy the Apera Instruments GroStar Series GS4-E Replacement pH/EC Combo Probe on Ubuy. Ubuy offers a variety of laboratory instruments, including this combo probe, ensuring easy access for customers seeking reliable measurement tools. Shopping on Ubuy provides a convenient platform for purchasing essential equipment for gardening, hydroponics, or laboratory use, helping you find the right tools for your needs in Laos.

Apera Instruments pH Meters Editorial Review

No editorial reviews found

Customer Reviews & Ratings

5.0
1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Platform Trust & Buyer Confidence

trustpilot logo
4.3/5 9,000 + reviews
Read reviews
MT
Mohd
Verified buyer

“The product received very good packaging & safe…Thank You”

16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer

“Accurate delivery timing given”

16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer

“Not madly expensive like I thought, and much quicker than promised.”

15 June 2026 · via Trustpilot
LM
Leila
Verified buyer

“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”

6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer

“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

LAK 1607685

Order now and get it around Thursday, July 30

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Replacement probe for GroStar GS4 pH/EC tester.
  • Measures pH, conductivity (EC and PPM), and temperature.
  • Built with lithium glass membrane and titanium alloy.
  • Ensures high accuracy and durability.
  • Features a double junction structure.
  • Uses blue gel electrolyte to eliminate air bubbles.

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.