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Description
Ohaus AQUASEARCHER™ AB33M1 pH + EC Bench MeterOhaus AQUASEARCHER AB33M1 Standard Multi Parameter Bench Meter OHAUS AquaSearcher AB33M1 benchtop meter is designed to be reliable, efficient and user friendly. The i Steward ensures repeatable and consistent measurement accuracy for optimal peace of mind. Large LCD display and touch keypad makes changing the parameters, executing setup, and performing calibration as simple as using a smartphone. i Steward Indicators include the electrode condition,
Ohaus AQUASEARCHER™ AB33M1 Standard Multi-Parameter Bench Meter
OHAUS AquaSearcher™ AB33M1 benchtop meter is designed to be reliable, efficient and user friendly. The i-Steward ensures repeatable and consistent measurement accuracy for optimal peace of mind. Large LCD display and touch keypad makes changing the parameters, executing setup, and performing calibration as simple as using a smartphone.
i-Steward Indicators include the electrode condition, “Electrode Dirty/Broken,” and reminder when meter needs recalibration. Perform up to a 5-point calibration using automatic buffer recognition of 5 predefined buffer groups. Calibration log stores ten most recent calibrations. Compact stirrer can be used to uniformly mix solutions to get fast and repeatable results at no additional cost.
i-Steward Indicators include the electrode condition, “Electrode Dirty/Broken,” and reminder when meter needs recalibration. Perform up to a 5-point calibration using automatic buffer recognition of 5 predefined buffer groups. Calibration log stores ten most recent calibrations. Compact stirrer can be used to uniformly mix solutions to get fast and repeatable results at no additional cost.
Features:
• With multifunctional touch keypads, AB33 makes measurement simple and fast
within 3 steps. The intelligent i-Steward monitors the condition of electrodes,
ensuring accuracy of the results.
• Able to store up to 1000 items in its internal memory, AB33 allows for efficient
data documentation. Standard RS232 and USB interface allows
connection to external devices for expanded storage.
• With multifunctional touch keypads, AB33 makes measurement simple and fast
within 3 steps. The intelligent i-Steward monitors the condition of electrodes,
ensuring accuracy of the results.
• Able to store up to 1000 items in its internal memory, AB33 allows for efficient
data documentation. Standard RS232 and USB interface allows
connection to external devices for expanded storage.
• Auto endpoint mode and auto buffer recognition makes pH calibration
easy. Auto temperature compensation, adjustable TDS factor and two kinds of
cell conductivity probe compatibility are all features well suited for universal
laboratory applications.
easy. Auto temperature compensation, adjustable TDS factor and two kinds of
cell conductivity probe compatibility are all features well suited for universal
laboratory applications.
• Adjustable TDS Factor - The factor that relates conductivity to total dissolved solids is based on the type of sample being measured. To have correct temperature compensation when measuring conductivity, the linear compensation coefficient adjusts by automatic temperature compensation. Selectable reference temperatures of 20 or 25 ºC for temperature compensated conductivity readings.
Packages - Available in two configurations:
| a-AB33M1-B | a-AB33M1-F |
|
|
Specifications:
| Measurement Range | -2.00 – 20.00 pH; -5 °C – 110 °C; -2000.00 – +2000.00 mV |
| Measurement Resolution | ; 0.1 °C; 0.01 pH |
| Accuracy | ±0.3 °C; ; ±0.01 pH |
| Display | LCD with backlight & one-line dot matrix |
| Electrode | ST310 (Included); STCON3 (Included) |
| Accuracy ± (mV) | 0.5 mV |
| Accuracy ± (Temperature) | 0.3 °C |
| Conductivity accuracy (±) | 0.5 % |
| Conductivity measuring range | 0.01 μS/cm – 500 mS/cm |
| Dimensions | 8.3 in x 2 in x 5.6 in (210 mm x 51 mm x 142 mm) (LxHxW) |
| Net Weight | 1.1 lb (0.5 kg) |
| Parameter | pH / Cond |
| pH accuracy (±) | 0.01 |
| Power | AC Adapter (Included) |
| Resistivity measuring range | 2 Ohm ; 100 MOhm |
| Resistivity resolution | 0.01 Ohm |
| Working Environment | 5°C – 40°C, 80% RH, Non-condensing |
Additional Literature:
Aquasearcher Data Sheet -EN
Aquasearcher Data Sheet - FR
Quick Start Guide
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
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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
4.8 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Love this soap
This is a wonderful zinc soap. Cleans very well and smells great. No heavy perfume smell.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
★★★★★ 5
great for kids with dry skin!
Scent: Fragrance Free, Size: 2 Pack - 3.5 Ounce & 8 Ounce
This ointment has been a great find for sensitive baby skin. We started using it for dry patches and mild eczema, and it made a noticeable difference within a few days. The texture is rich and soothing without feeling overly greasy, and it absorbs well enough that it doesn’t leave everything sticky.
I really appreciate that it’s fragrance-free and made without steroids—perfect for everyday use, especially on delicate skin. We’ve used it on everything from dry cheeks to minor irritation, and it’s been consistently gentle and effective.
The 2-pack is a nice bonus since we keep one at home and one in the diaper bag. A little goes a long way, so the jars last longer than expected.
The only downside is the price—it’s a bit more expensive than some alternatives—but for the quality and peace of mind, it feels worth it.
Overall, I’d definitely recommend this for parents looking for a reliable, gentle solution for dry or sensitive skin.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Only thing that worked! So thankful!
Scent: Fragrance Free, Size: 2 Pack - 8 Ounce
I can’t believe I’m going to do this, but I’m writing a review and a long one at that! My baby began having skin issues around 5weeks old. Which I believe was from washing her with Honest baby soap(but I believe any soap would have been a problem)- up until then I had only used a wash cloth and water. But that week I washed her twice with the soap and that weekend my son had back to back soccer games it was 90degeee weather and my baby got sweaty. Then after that her skin just seemed to have problem after problem! I didn’t know if it was heat rash, eczema, or baby acne or combination? So no more soap and returned to water and started putting breastmilk and tallow on her which really helped with the redness. but her skin still felt like sand paper and would easily get inflamed if warm or sweaty. Around 8weeks of age she started getting cradle cap behind and on her ears and her eyebrows, then mildly on her head ugh. And she was VERY itchy and would be itching her head all night. So I ordered MuStella shampoo and the Frida cradle cap scrubby and brush set. After 2-3 days my babies head had red bumps, very inflamed and still very itchy. It said to wash everyday and remove the scales but I just couldn’t keep doing that. I would slather tallow on my babies head after washing and I returned to just rinsing with water as that seemed to help. I would also gently use the comb because her hair would be crazy after applying cream to scalp. This also helped to further distribute the cream and clean out some dry flakes from scalp- no need to scrub with that scrubber. But she was still itchy. So that’s when I decided to add the colloidal oatmeal for the sleepless nights itching- which this has 1% as an active ingredient. The price was definitely not appealing but I got it. After 1 day of using this it was like my babies skin was completely transformed!!! Even her sandpaper feeling face got clear and smooth feeling again! All day I was just so thankful and happy to have my babies smooth skin back after weeks of battling skin problem after skin problem. I really think it had to do with the soap in the first place, maybe effected natural skin barrier. Which if you research skin ph and barrier a lot of things will do that. What really washes dirt away is rubbing and water. I could kick myself for even using the the soap on my babies precious skin.
So what worked for us was not using soaps and just washing with water, slather on tallow WHILE SKIN IS STILL WET, this locks in the moister. Water is moisture and all lotion and creams do are lock in the moisture so you want your skin wet before applying creams. Creams help slow down transepidermal water loss. Which is another reason to protect your skin barrier as it has ability to retain moisture better. So we washed with water, applied whipped tallow while still wet and this colloidal oatmeal ointment on top of that.
I can hardly believe the overnight difference! I almost never ever write a review but just really wanted to share our story if it may help others. I usually do not buy expensive products like this, but I’m glad I tried- it worked AMAZINGLY for my baby- she is so much more comfortable!!! I’m so thankful!
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Reviewed in the United States on November 5, 2024
★★★★★ 5
Great for Dry Skin, Works Fast!
Scent: Fragrance Free, Size: 2 Pack - 3.5 Ounce & 8 Ounce
10/10 would recommend. This is heavy duty lotion, cream, but it works for my baby in 1-2 uses if he has dry skin or a rash. It is worth the cost in my opinion, only want to put on a small amount at a time anyway it is very thick and a little goes a very long way.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
It’s expensive for a reason, this stuff works! Even better than the steroids
Scent: Fragrance Free, Size: 2 Pack - 3.5 Ounce & 8 Ounce
It’s expensive for a reason! This stuff works, my 4 mo old has been struggling with eczema for 2 months now and we have been to the ER twice due to infections, I’ve taken everything out of my diet since he’s breastfeeding, we’ve tried every other cream and routine out there. Up until just a few days ago when we ordered Tubby Todd’s his cheeks were constantly raw and weeping. After just 3 days of use with Tubby Todd’s he is finally getting some reprieve and we are finally getting SLEEP (before we would have to hold his hands down manually all night so he wouldn’t itch himself raw) this cream is even better than the steroids, you won’t regret purchasing even at the high price point.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026