Milwaukee SE220 Lab Grade Double Junction pH Probe
Milwaukee SE220 Lab Grade Double Junction pH Probe

Milwaukee SE220 Lab Grade Double Junction pH Probe

Availability: In Stock
Brand: Milwaukee Instruments
DESCRIPTION The Milwaukee SE220 is a lab-grade, double junction, gel-filled pH probe designed for use with the...
$58.99
$69.00
$58.99
Subtotal: $58.99

Lead Time

this products ships in 1-2 days

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Description

DESCRIPTION

The Milwaukee SE220 is a lab-grade, double junction, gel-filled pH probe designed for use with the Milwaukee MW100, MW101, and MW102 PRO pH Meters. Low maintenance and highly durable, the SE220 is the go-to replacement probe for Milwaukee PRO pH meters used in hydroponics, pools, aquariums, and laboratory applications.

DESIGN FEATURES

DOUBLE JUNCTION: The double junction design significantly reduces the risk of clogging from fertilizer solutions, organic matter, and other contaminants — extending probe life and maintaining measurement accuracy.

GEL FILLED: The gel electrolyte eliminates the need to maintain or refill electrolyte levels, making the SE220 virtually maintenance-free compared to liquid-filled probes.

RESIN BODY: The highly durable, chemically resistant resin body protects against accidental damage and is suitable for aggressive agricultural and hydroponic environments.

CARE AND USE

1. Always store with the cap filled with buffer or storage solution MA9015 — never plain water.
2. Clean the probe regularly by soaking in cleaning solution MA9016.
3. Calibrate after cleaning and/or storage before testing.
4. Gently stir the probe in the sample for a faster, more stable result.

SPECIFICATIONS

  • Body: Resin | Reference: Double, Ag/AgCl | Junction: Ceramic, Single
  • Electrolyte: Gel | Range: 0–14 pH | Tip Shape: Sphere
  • Diameter: 0.5 inches | Length: 4.7 / 6.4 inches
  • Operating Temperature: -5 to 70°C (23 to 158°F)
  • Cable length: 3.3 feet | Connection: BNC

Frequently Asked Questions

Q: What Milwaukee meters is the SE220 probe compatible with?
A: The SE220 is designed for use with the Milwaukee MW100, MW101, and MW102 PRO pH meters. It connects via a standard BNC connector. Always verify BNC compatibility with your specific meter model before ordering.

Q: Why is a double junction probe better than a single junction probe?
A: Double junction probes have two reference junctions instead of one, which significantly reduces the risk of clogging from fertilizer solutions, proteins, sulfides, and other contaminants common in hydroponic and food applications. This results in longer probe life, more stable readings, and less frequent maintenance compared to single junction probes.

Q: Does the SE220 require electrolyte refilling?
A: No. The SE220 uses a gel-filled electrolyte design that requires no refilling or maintenance of electrolyte levels — unlike traditional liquid-filled probes. This makes it significantly easier to maintain and ideal for users who want reliable performance without the hassle of electrolyte management.

Q: How do I store the SE220 probe to maximize its lifespan?
A: Store the SE220 with the protective cap filled with pH buffer or storage solution MA9015 — never plain water, tap water, or DI water. Keep the probe hydrated at all times; dry storage damages the glass sensing bulb and can clog the reference junction. Store upright to prevent leakage.

Q: Where can I buy the Milwaukee SE220 lab grade pH probe?
A: You can purchase the Milwaukee SE220 directly from Seres Ag at seresag.com. Seres Ag is a trusted supplier of professional pH probes, hydroponic instruments, and controlled-environment agriculture supplies. Shop at seresag.com for competitive pricing, fast shipping, and expert support.

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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