Skip to content
Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable Milwaukee Instruments
Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable Milwaukee Instruments
Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable Milwaukee Instruments
Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable Milwaukee Instruments

Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable

$124.08

    SKU: MA921B/2

    UPC: 810666009220

    MPN: MA921B/2

    Range: ± 2000 mV ORP

See All Specs

aeroplane.png__PID:119d4b1a-2623-400c-8fa4-aec5b49a3bf0

Fast Delivery

Most items ship same day

protection.png__PID:4b1a2623-e00c-4fa4-aec5-b49a3bf05f92

Manufacturer Warranty

All products are covered by manufacturer warranty

technical-support.png__PID:e00c8fa4-aec5-449a-bbf0-5f923431936b

After-Sale Support

24/7 support

What's Included

download (70).webp__PID:7ab0a366-c50a-41ee-ae3a-ab9ed2dfc0ad

VR Headset

download (71).webp__PID:547ab0a3-66c5-4a41-aeae-3aab9ed2dfc0

2 Touch Controllers

download (72).webp__PID:dc547ab0-a366-450a-81ee-ae3aab9ed2df

Charging Cable

download (72).webp__PID:dc547ab0-a366-450a-81ee-ae3aab9ed2df

Power Adapter

download (72).webp__PID:dc547ab0-a366-450a-81ee-ae3aab9ed2df

Glasses Spacer

download (69).webp__PID:26576cae-f878-4c99-ab7c-894d76af129b

The Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe with Extended Cable is engineered for precision and durability in monitoring applications. This advanced ORP probe is particularly suited for aquariums and other sensitive aquatic environments, ensuring optimal quality control through accurate and reliable readings.

The MA921B/2M probe seamlessly integrates with Milwaukee Instruments Monitors and Controllers, making it a versatile choice for professionals. Its innovative double junction design minimizes the risk of clogging, which leads to more stable measurements and less maintenance, saving you time and resources.

Key Features:

  • Double Junction: This feature enhances the lifespan of the probe while providing consistent performance, ensuring that your ORP readings remain accurate over time.
  • Gel-Filled Technology: The gel filling eliminates the need for electrolyte maintenance, allowing for hassle-free operation and enhancing the convenience of use.
  • Durable Resin Body: The robust resin material not only provides chemical resistance but also safeguards the sensing bulb against accidental breakage, extending the overall life of the probe.
  • Low Maintenance Platinum Electrode: The platinum electrode is designed to provide longevity and low maintenance, making it an economical choice for continuous monitoring.

To ensure peak performance and extend the life of your ORP probe, proper care is essential. Here are three crucial maintenance tips:

1. Always store the probe with the cap filled with buffer or storage solution instead of water.

2. Clean your probe regularly by soaking it in a cleaning solution to remove any residues.

3. Use the MA9020 (200 mV–275 mV) Calibration Check Solution for accurate calibration.

Achieve optimal ORP measurements with the Milwaukee MA921B/2 Lab Grade Double Junction ORP Platinum Probe, your reliable partner in aquatic monitoring.

    Specification Detail
    Body: PEI Resin
    Reference: Double, Ag/AgCl
    Junction: Ceramic
    Electrolyte: Gel
    ORP Range: ±2000 mV
    Tip Shape: platinum pin
    Dimensions: 6.4 inches
    Recommended Operating Temperature: -5 to 70°C (23 to 158°F)
    Cable length: 6.6 feet
    Connection: BNC

    Milwaukee Instruments Warranty & Returns Policy
    (For Milwaukee Instruments ONLY – Not for Milwaukee Tools)

    How to Initiate a Return or Warranty Claim
    For products purchased through Blue Tiger Scientific, all returns must be initiated directly with us. However, all warranty claims must be handled directly through Milwaukee Instruments.

    Warranty Information
    Milwaukee Instruments products are manufactured to meet the highest quality standards and come with a limited warranty against defects in materials and workmanship. Products may be returned for repair or replacement at Milwaukee's discretion. Warranty is void if the product has been abused, misused, or repaired by unauthorized persons.

    To register your Milwaukee product, click here.

    Warranty Periods

    • Handheld testers, portable meters, and stationary monitors/controllers: 2 years
    • Bench meters: 3 years
    • PH600 pH Pen and similar versions: 1 year
    • Replaceable probes: 6 months

    Warranty begins on the original end-user purchase date or a maximum of 12 months from dealer purchase. Valid only with proper usage and maintenance. Service occurs at Milwaukee Instruments' North Carolina Technical Service Center.

    Note: Meters used in Kangen Water or “Negative ORP Water” applications are excluded from warranty coverage. Any warranty for these uses is null and void.

    Filing a Warranty Claim
    Contact Milwaukee Instruments Customer Service at (252) 443-3630 EST for an RMA number. Mark the RMA clearly on the box and ship prepaid. Improper packing can void the warranty.

    Return Policy (Blue Tiger Scientific)
    All purchases are final, but returns may be accepted under specific conditions:

    • Items must be in new condition with original packaging and contents.
    • Returns must be initiated within 14 days of purchase.
    • Subject to up to 30% restocking fee.
    • Customer pays all return shipping.
    • Initial shipping charges are non-refundable.

    Returns will be refused if packaging is damaged or contents are missing.

    Initiating a Return with Blue Tiger Scientific
    Contact Blue Tiger Scientific for an RMA and shipping instructions. Mark RMA clearly and pack securely to avoid transit damage. Shipping damage claims are the sender’s responsibility.

    Refunds, if eligible, will be processed within 5–10 business days. Credit card refunds may take longer to appear on your statement.

Product Resources:

Copy of Technical Specifications

FeatureDetails
Viewing Head Siedentopf type trinocular head, inclined at 30°, Interpupillary adjustment 53mm to 75mm, graduated diopter on left eyetube (30mm I.D. eyetubes)
Eyepieces SWH10X Widefield high eyepoint eyepiece, Field No. 22, tube O.D. 30.0 mm
Nosepiece Quintuple
Quintuple LWD Planachromat Phase 10x, 20x
Condenser TC Condenser N.A. 0.30, W.D. 73.0mm
Stage180mm(X) x 245mm(Y) plain stage with replaceable glass insert with 45mm opening, Glass Stage plate insert
IlluminationKoehler without iris, with phase slider, 3W LED
WarrantyLIMITED LIFETIME WARRANTY

Questions about a product? Ask us here.

email us here: info@bluetigerscientific.com or live chat