Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

Shop

dWeb : Health - " Subscribe to Save" InterPageNavigationBanner WK 44 2025

Buy Box Ad Container Module for Desktop

Custom HTML Module - About Klarna

Custom HTML Module - About SalesFinancing - Second update

You'll choose a plan at checkout.

#515357

I want delivery savings with Delivery Pass

#0071dc

NEW Fulfillment Tue Apr 15 2025 2:17 PM EDT

MTZ Team | Marquee 1 Ad | Item Page

MTZ Team | Marquee 2  Ad | Item Page

MTZ Team | Skyline Ad | Item Page

Other products of interest

MTZ Team | Sponsored Product Carousel - Item Page

More items to explore

MTZ Team | Sponsored Product Carousel - Item Page Broad 

NEW AddonServicesRedesign Fri Jul 18 2025 1:30 PM EDT

NEW AddToCart Mon Jul 14 2025 3:50 PM EDT

NEW AddToCart Tue Apr 15 2025 2:19 PM EDT

NEW BrandBoxDisplayAd Mon Jul 14 2025 9:14 PM EDT

NEW BrandLink Wed Apr 23 2025 12:07 AM EDT

NEW Breadcrumb Mon Apr 07 2025 8:23 PM EDT

Walmart Rewards Mastercard

NEW FinancingOptions Tue Dec 10 2024 3:32 PM EST

I want shipping & delivery savings with

NEW Fulfillment Mon Jul 14 2025 4:00 PM EDT

New Item Page - Nutrition Value Placeholder Module, Wednesday, February 08, 2023, 5:11:53:90 pm

New Item Page - Product Description Placeholder Module, Wednesday, February 08, 2023, 5:14:04:38 pm

New Item Page - Product Ingredients Placeholder Module, Friday, February 10, 2023, 10:34:23:79 am

New Item Page - Product Specifications Placeholder Module, Wednesday, February 08, 2023, 5:15:29:61 pm

New Item Page - Reviews Placeholder Module, Wednesday, March 22, 2023, 10:04:29:34 am

New Item Related Shelves Module, Thursday, June 15, 2023, 6:08:51:10 am

 Price Match Policy

Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

NEW LegalPriceDisclaimer Mon Jul 14 2025 4:11 PM EDT

NEW LegalPriceDisclaimer Wed Apr 30 2025 12:13 AM EDT

NEW ListsAndRegistries Tue Apr 15 2025 4:50 PM EDT

NEW PaymentPlans Mon Jul 14 2025 4:15 PM EDT

NEW PaymentPlans Tue Apr 15 2025 1:31 PM EDT

NEW PriceInformation Tue Apr 15 2025 1:30 PM EDT

NEW ProductDescriptionPlaceholderATF Tue Jul 08 2025 11:41 PM EDT

NEW ProductFlags Thu Apr 10 2025 11:42 PM EDT

NEW ProductImages Tue Apr 15 2025 2:13 PM EDT

NEW ProductName Tue Apr 15 2025 12:53 PM EDT

NEW ProductReturnPolicyDetails Tue Dec 10 2024 3:17 PM EST

NEW ProductReturnPolicy Mon Jul 14 2025 5:04 PM EDT

NEW ProductReturnPolicy Tue Apr 15 2025 2:28 PM EDT

NEW ProductStickyBuyBox Wed Jul 02 2025 12:55 AM EDT

NEW PromoDiscount Tue Apr 15 2025 6:53 PM EDT

New SellersSecondaryBuyBox Module, Tuesday, September 05, 2023, 4:02:21:76 pm

Shop Confidently

NEW ShopWithConfidence Thu Jan 15 2026 2:20 PM EST

NEW SocialProofMessage Tue Apr 15 2025 7:17 PM EDT

NEW SoldAndShippedBy Mon Jul 14 2025 5:04 PM EDT

NEW SoldAndShippedBy Tue Apr 15 2025 2:23 PM EDT

New!

More savings, less stress.

HSK_Subscribetosave_E_v2

NEW SubscriptionOptionsModule Tue Apr 15 2025 6:44 PM EDT

NEW SubscriptionPriceMessage Wed Apr 23 2025 6:48 PM EDT

NEW Variants Wed Apr 23 2025 11:01 PM EDT

[Sticky] BuyBoxAd Mon Aug 11 2025 3:59 AM EDT

[Sticky] PriceInformation Mon Jul 14 2025 4:03 PM EDT

Syndigo

#000000

Item Carousel - Rich Relevance 1

RR carousel

Item Carousel - Rich Relevance 2

RR carousel 2

Item Carousel - Rich Relevance 3

OXYGEN Detector, Digital Dissolved Oxygen Meter Analyzer For 0.0-40.0mg/L Oxygen Concentration Portable DO Pen

<ul><li>With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40 degrees Celsius , and the reading is accurate and stable</li><li>It is suitable for freshwater aquaculture, marine aquaculture, swimming pools, beverage factories, sewage treatment plants, and laboratories</li><li>Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water</li></ul>

Brand

Assembled Product Dimensions (L x W x H)

Assembled Product Weight

<br/><b>Specification:</b><br/>Item Type: Dissolved Oxygen Meter<br>Material: ABS<br>Weight: Approx. 328g/11.6oz<br>Dissolved Oxygen Meter Size: Approx. 35 x 155mm/1.4 x 6.1in<br>Electrode Length: Approx. 150mm/5.9in<br>Cable Length: Approx. 1.1m/3.6ftMeasuring Range:<br>Dissolution: 0.0-40.0mg/L<br>Dissolved Oxygen Saturation: 0.0-300.0%<br>Temperature: 0.1-40.0 degrees Celsius ; 32.0-104.0℉Resolution:<br>Dissolution: 0.1mg/L<br>Dissolved Oxygen Saturation: 0.1%<br>Temperature: 0.1 degrees Celsius ; 0.1℉Accuracy:<br>Dissolution: ±1.5%F.S<br>Dissolved Oxygen Saturation: ±1.5%F.S<br>Temperature: ±0.5 degrees Celsius Calibration Method: Support single-point or double-point automatic calibration, that is, 0 point or automatic  calibration in the air.Response Time:  Less than or equal to 45s 90% Response at 20 degrees Celsius <br>Automatic Temperature Compensation Range: 0-40 degrees Celsius <br>Battery : Low Battery Warning<br>Backlight: Support Automatic Backlight<br>Power Supply: Automatic Shutdown for About 8 Minutes<br>Battery Attributes: 3 x 1.5V 150MAH LR44 Battery Battery Not Included<br>Use Environment: 0.1-40.0 degrees Celsius   Maximum 90%<br><br>Instructions for Use:<br>1. Connect the electrodes, press the power button, power on, the screen will display mg/L temperature<br>2. Short press the HOLD button to lock the value, long press the TEMP button to switch  degrees Celsius  or ℉<br>3. Short press the MODE button to switch mg/L or%<br>4. Long press the CAL button to calibrate in the air. The screen displays 100.0%. After the flashing is completed, the calibration is successful. If calibrated in anaerobic water, 0.0% is displayed. <br/><br/><b>Package List:</b><br/><div>1 x Dissolved Oxygen MeterBattery Not Included</div><div>1 x Electrode</div><div>6 x Replaceable Electrode Tip</div><div>1 x Instruction</div> <br/><br/><b>Note:</b><br/><div>1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding.</div><div>2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.</div><div>3. This product does not come with electrode filling fluid.</div>

Universal Product Code (UPC check)