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Description
Milwaukee MA920B/1 Direct Measurement Food Grade pH ProbeMilwaukee MA920B 1 Direct Measurement Food Grade pH Probe The MA920 probe is a food grade probe for use with the MW101 or MW102 PRO pH meters. It is specifically designed for the pH analysis of semisolid foods such as processed meats, soft cheeses, soups, sauces, and sushi rice. The open junction design reduces clogging from suspended solids and proteins found in food and dairy products for a more stable pH measurement and reduced maintenance. The
Milwaukee MA920B/1 Direct Measurement Food Grade pH Probe
The MA920 probe is a food grade probe for use with the MW101 or MW102 PRO pH meters. It is specifically designed for the pH analysis of semisolid foods such as processed meats, soft cheeses, soups, sauces, and sushi rice.
The open junction design reduces clogging from suspended solids and proteins found in food and dairy products for a more stable pH measurement and reduced maintenance.
The conical shaped tip design allows for penetration into solids, semi solids, and emulsions for the direct measurement of pH in a variety of food products.
Polyvinylidene fluoride (PVDF) is a food grade plastic that is resistant to most chemicals and solvents used for disinfection in the food sector, including chlorine (bleach).
Specifications:
- pH Range: 0 -12
- Temperature Range: -5 - 40 C / 23 - 104 F
- Body Material: PVDF
- Reference Electrolyte: Viscolene Gel
- Reference Type: Singe, Ag / AgCl
- Reference Junction: Open
- Max Pressure: 0.1 bar
- Tip Shape: Conic
- Diameter: 0.24 inches
- Body Length / Overall Length: 2.95 / 5.1 inches
- Cable length: Coaxil, 3.3 feet
- Connection: BNC
CARE AND USE
pH meters usually start performing poorly because of problems with the probe, specifically the glass sensing bulb and the reference junction. The glass bulb loses sensitivity with use and will eventually fail, which is true of all pH probes. The reference junction is a small hole that allows the meter to compare the sample to a reference. If the junction hole gets clogged, the pH probe will no longer function.
The life of your pH electrode can be extended in the following ways:
- Storage - The pH probe needs to be kept hydrated. Long periods of dry storage will damage the sensitivity of the probe. Allowing the probe to dry out may also result in the junction hole getting clogged. Storing in pH probe storage solution or pH calibration buffers will help address both these issues. Do not store in tap water and DI water, this will damage the sensitivity of the probe. The best way to store the probe is with the probe's cap filled with storage solution or calibration buffer and the cap tightened to prevent leakage. It is also recommended to store the electrode upright to further reduce the potential for leakage.
- Cleaning - Residue from the sample can impact the sensitivity of the sensing bulb and clog the junction. This is especially true if the sample has a lot of organic material. It is recommended to regularly soak your electrode in cleaning solution.
- Calibration - The pH sensing bulbs become less sensitive over time so make sure that you are calibrating regularly to keep your PRO pH meter accurate. Also, calibrate after cleaning or a long period of storage.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
👍🏼
Color: Multi Squeaker Balls, Size: Medium, Style: 4-Pack
This dog squeak ball has been a big hit in my home and keeps my dog entertained for long periods of time. The squeaker really grabs their attention and encourages play, tapping into their natural instincts to chase and fetch.
My dog especially loves how it bounces and squeaks, making it perfect for both indoor and outdoor play. It’s lightweight and easy for them to carry around, even for quick games of fetch in the yard.
In terms of durability, it has held up pretty well so far. The squeaker may not last forever with heavy use, but the ball itself still stays in good shape. Overall, it’s a fun, engaging toy that keeps my dog active and happy.
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Reviewed in the United States on April 29, 2026
★★★★★ 4
budget friendly for dogs who lose balls in the creek
Color: Multi Squeaker Balls, Size: Medium, Style: 4-Pack
Not great quality, but works for our needs. I have a ball crazy lab. She loves for me to throw a ball using the Chuck-it Ball Launcher. We do this in our wide back yard that butts up to a creek. At some point during her run and fetch, she will take a quick detour right into the creek. She nearly always still has the ball, but once in awhile it is lost. Not wanting to chance it on more pricy (and more durable) balls, I get these or something like these. They dont cost much, yet they do the job. I' not upset if one gets sacrificed to the creek waters and mud.
Since the balls end up getting wet often, they will kinda fall apart over time (chasing, kicking, throwing, retrieving, dog saliva etc). But she doesn't chew on them. Glad she doesnt as tennis balls arent good on teeth, but even if it was ok, the balls probably would be breached easily.
SO get these if you are like me and want a ball that does the job but arent a total financial loss if get lost or destroyed. For indoor play we and by we I mean our 3 dogs demand that we use the rubbery max glow chuck-it ball. And will ignore this style ball.
Yes, I am well trained. lol
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Reviewed in the United States on November 11, 2024
★★★★★ 1
These balls SUCK! External squeakers, minimal bounce and blue that is too dark.
Color: Multi Squeaker Balls, Size: X-Small, Style: 8-Pack
We have 2 little dogs in our home - a 1.5 year old Pomsky, and a 9 year old Pekingese. My Peke has shown no interest in tennis balls for years, until today! Imagine my excitement! Until she promptly destroyed the first squeaker on one of the blue balls. When I removed it, she began peeling the logos off the ball, and then started tearing the fuzz off! My dog has never destroyed any toy in her life, so this was shocking! Then the Pomsky decided that she wanted to play fetch with the new balls - she has Golden Retriever energy - and decided to destroy a squeaker in the midst of playing! She also wasn't nearly as interested in these tennis balls as her other tennis balls that she inherited from my Peke.
1. STUPID design, with the squeakers sticking out of the balls (the don't sit flush), so they are asking to get chewed or pulled out by any dog, even elderly 10 lb dogs! And a 9 lb young adult.
2. They are difficult to squeak compared to their Kong tennis balls, hence why the Pomsky wasn't interested for long.
3. They don't bounce as much as the Kong tennis balls, either, which made them less than exciting for the athletic and agile Pomsky.
Meh. We wanted to get the smallest tennis balls we could get (1.5 inch) because neither dog will play with the 2 inch or bigger ones, but we also wanted to get colors they could easily see! The Pomsky clearly prefers the yellow balls to any other color (red, orange, green, darker blue, watermelon design), so we wanted to get like a bright blue or turquoise couple of balls to appeal to them! Well, my senior Peke liked the blue ones the most, but also liked the red and orange. Pomsky didn't like the blue ones. I think they're too dark of a blue to be easily seen in our home afternoons and evenings in the winter.
We love Outward Hound toys in our house, but these were an expensive FLOP. They are the right size, but WHY did they put the squeakers so visible and appealing to dogs? I've never seen the squeaker in the Kong tennis balls.
My advice is that Kong seems to make the best tennis balls for toy breeds, in the 1.5" size. Outward Hound dropped the ball here... no pun intended. The blue is darker than the photos depict (may be better in natural sunlight outdoors), the squeakers are external, and they barely bounce at all. Our next step will be to get the pressurized bright blue tennis balls from another brand, in hopes that the bounce and visibility will outweigh the lack of squeakiness. If those don't work, I guess we'll stick to the classic neon yellow Kong tennis balls! At my local Target, they only have multicolor packs of them, and the dark blue, red and green get completely ignored.
*Dogs can only see shades of blues, yellows and black, grey and white. While some dogs may not seem to care about color, our Pomsky clearly does. :(
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Reviewed in the United States on December 21, 2023
★★★★★ 5
My Dog Loves Them
Color: Multi Squeaker Balls, Size: Small, Style: 8-Pack
These cute little squeaky balls are the perfect size for my Shih Tzu. She loves to chew on them and make them squeak all the time, so they are durable. I would purchase them again.
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Reviewed in the United States on May 16, 2026
★★★★★ 3
Not super durable but good squeak while they work
Color: Multi Squeaker Balls, Size: Large, Style: 4-Pack
My dog loves these but they break very quickly. I've got an older set that was incredibly durable, but these all stopped squeaking/got holes after the first or second play session
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Reviewed in the United States on May 30, 2026