Milwaukee MC120 PRO pH monitor
Milwaukee MC120 PRO pH monitor
Milwaukee MC120 PRO pH monitor
Milwaukee MC120 PRO pH monitor

Milwaukee MC120 PRO pH monitor

Availability: In Stock
Brand: Milwaukee Instruments
DESCRIPTION The Milwaukee MC120 PRO High Range pH monitor offers lab grade accuracy with an easily viewable...
$91.80
$110.16
$91.80
Subtotal: $91.80

Lead Time

this products ships in 1-2 days

  • Seres
Description

DESCRIPTION

The Milwaukee MC120 PRO High Range pH monitor offers lab grade accuracy with an easily viewable continuous check on pH levels with alarms. Ideal for nutrient tanks, aquariums, pools, spas, and any application requiring 24/7 pH monitoring without manual testing.

DESIGN FEATURES

  • Fast, easy-to-read results with large digital LCD readout.
  • Accuracy to ±0.2 pH with a full 0.0 to 14.0 pH range.
  • Set point range of 5.5 to 9.5 pH with alarm activated when reading is higher or lower than set point.
  • Comes with full mounting kit including probe holders.
  • Lab grade double junction, gel-filled probe included for low maintenance.

CARE AND USE

SENSING BULB

The glass bulb loses sensitivity with use and will eventually need replacement. This is true of all pH probes. Monitor response time — when readings slow or drift, it's time to recalibrate or replace the probe.

REFERENCE JUNCTION

The reference junction allows the meter to compare the sample to a reference. If the junction becomes clogged, the electrode will no longer function accurately. Regular cleaning prevents this.

STORAGE

Keep the probe hydrated at all times. Store with the probe cap filled with storage solution or pH calibration buffer — never tap water or DI water. Store upright to prevent leakage.

CLEANING

Regularly soak the probe in cleaning solution to remove residue from the sensing bulb and reference junction, especially in organic-rich samples.

CALIBRATION

Calibrate regularly using 2-point manual calibration to compensate for probe aging and maintain accuracy.

SPECIFICATIONS

  • pH Range: 0.0 – 14.0 pH
  • pH Resolution: 0.1 pH
  • pH Accuracy: ±0.2 pH
  • Calibration: Manual 2 points
  • Setpoint range: 5.5 to 9.5 pH
  • Alarm: Active when reading is higher or lower than set point
  • pH Electrode: MA911B/2 (included)
  • Environment: 0 to 50°C / 32 to 122°F; max RH 95%
  • Power Supply: 12 VDC adapter (included)
  • Mounting kit included
  • Dimensions: 5.9 x 3.2 x 1.35 inches
  • Weight: 6.3 ounces (meter only)

Frequently Asked Questions

Q: What is the Milwaukee MC120 PRO and how does it differ from a handheld pH meter?
A: The MC120 PRO is a wall-mounted continuous pH monitor designed for 24/7 inline monitoring of pH levels in nutrient tanks, aquariums, pools, spas, and process water. Unlike handheld meters that require manual dipping, the MC120 PRO provides a constant real-time pH readout with high/low alarms — alerting you automatically when pH drifts outside your set point range of 5.5 to 9.5 pH.

Q: What alarm functionality does the MC120 PRO have?
A: The MC120 PRO triggers an alarm whenever the measured pH rises above or falls below your configured set point. The set point range is 5.5 to 9.5 pH, making it ideal for hydroponic nutrient management, pool chemistry, and aquarium maintenance where pH stability is critical. The large LCD display makes it easy to read current pH at a glance.

Q: What probe does the MC120 PRO use and is it replaceable?
A: The MC120 PRO includes the MA911B/2 lab-grade double junction, gel-filled pH electrode. This probe is replaceable when response time degrades, extending the life of the monitor significantly. The double junction design reduces contamination and is suitable for fertilizer solutions, nutrient tanks, and other demanding applications.

Q: How do I install and set up the Milwaukee MC120 PRO?
A: The MC120 PRO comes with a complete mounting kit including probe holders, making installation straightforward. Connect the MA911B/2 probe, plug in the 12 VDC power adapter, perform a 2-point manual calibration using pH 4.01 and 7.01 buffer solutions, set your desired pH alarm set point, and the monitor is ready for continuous operation.

Q: Where can I buy the Milwaukee MC120 PRO pH monitor?
A: You can purchase the Milwaukee MC120 PRO directly from Seres Ag at seresag.com. Seres Ag is a trusted supplier of professional pH monitoring equipment, 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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