Bluelab Inline pH Probe (Replacement Probe Guardian Monitor Connect In-Line)
Bluelab Inline pH Probe (Replacement Probe Guardian Monitor Connect In-Line)

Bluelab Inline pH Probe (Replacement Probe Guardian Monitor Connect In-Line)

Availability: Out Of Stock
Brand: BlueLab
Bluelab Inline pH Probe — Replacement High-Pressure pH Probe for Guardian Monitor Connect In-LineThe Bluelab® Inline pH...
$127.02
$152.42
$127.02
Subtotal: $127.02

Lead Time

this product ships in 1-3 business days

  • Seres
Description

Bluelab Inline pH Probe — Replacement High-Pressure pH Probe for Guardian Monitor Connect In-Line

The Bluelab® Inline pH Probe is the official replacement high-pressure pH probe for the Bluelab Guardian Monitor Connect In-Line continuous monitoring system. Designed specifically for in-line installation in hydroponic irrigation and recirculation systems, this probe features a 3/4 in NPT thread for standard pipe installations, with an included adapter collar that increases the thread size to 1 in NPT for larger pipe configurations.

pH probes are consumable components with a finite service life. Regular replacement of the inline pH probe is essential to maintaining the measurement accuracy of your Guardian Monitor Connect In-Line system. Signs that a probe needs replacement include slow response times, inability to calibrate accurately, or persistent reading drift that cannot be resolved through cleaning and recalibration. Keeping a replacement probe on hand minimizes downtime in critical commercial monitoring applications.

Lead Time: This is a special-order item. Current estimated lead time of up to 35 days may apply.

Key Features

  • Official replacement pH probe for the Bluelab Guardian Monitor Connect In-Line
  • High-pressure in-line design for direct pipe installation
  • 3/4 in NPT thread with adapter collar to 1 in NPT included
  • Maintains measurement accuracy of the Guardian Monitor Connect In-Line system
  • Special order — estimated lead time up to 35 days

Frequently Asked Questions

What is the Bluelab Inline pH Probe and which monitor does it fit?

The Bluelab Inline pH Probe is the official replacement pH probe for the Bluelab Guardian Monitor Connect In-Line continuous monitoring unit. It is a high-pressure probe designed for direct installation into irrigation or recirculation pipework, allowing the Guardian Monitor Connect In-Line to measure pH continuously as nutrient solution flows past the probe. It is not interchangeable with standard Bluelab pH probes used in reservoir-based monitors.

How do I know when to replace my Bluelab Inline pH Probe?

Common signs that your inline pH probe needs replacement include: slow or sluggish response times when pH changes, inability to calibrate accurately to pH 7.0 and pH 4.0 reference solutions, persistent reading drift that cannot be corrected through cleaning and recalibration, or physical damage to the probe body or junction. pH probes are consumable components with a typical service life of 6–12 months depending on usage intensity, solution chemistry, and maintenance practices. Regular calibration and proper storage between uses can extend probe life.

What pipe sizes is the Bluelab Inline pH Probe compatible with?

The Bluelab Inline pH Probe has a 3/4 in NPT thread for standard pipe installations. An adapter collar is included that increases the thread size to 1 in NPT for larger pipe configurations. This dual-size compatibility makes the probe suitable for a wide range of commercial hydroponic and irrigation system pipe sizes.

How do I maintain the Bluelab Inline pH Probe to maximize its service life?

To maximize the service life of your inline pH probe, calibrate it regularly using Bluelab pH 7.0 and pH 4.0 calibration solutions (at least weekly in active growing environments), clean the probe periodically to remove mineral deposits or biofilm buildup, and store the probe in Bluelab KCl Storage Solution if it is removed from the system for any period. Avoid exposing the probe to strong oxidizing agents or temperatures outside its rated range.

Where can I buy the Bluelab Inline pH Probe?

The Bluelab Inline pH Probe (replacement for Guardian Monitor Connect In-Line) is available through Seres Ag, a professional hydroponic and CEA equipment supplier serving commercial growers across the United States. Purchase directly at seresag.com. Please note this is a special-order item with an estimated lead time of up to 35 days. For bulk or wholesale inquiries, contact the Seres Ag team through the website.

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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