Skip to search Skip to main content

Not in the U.S?

Not shopping in the U.S. or plan on shipping to a Canadian address?

Continue to Canada site

Get help from our experts 24/7

1-800-672-4399

Sign In or Create Account

CartCart Shopping Cart, 0 items

Your cart is empty.

Something missing? Sign in to see items you may have added from another computer or device.

Not in the U.S?

Not shopping in the U.S. or plan on shipping to a Canadian address?

Continue to Canada site

Get help from our experts 24/7

1-800-672-4399

Sign In or Create Account

CartCart Shopping Cart, 0 items

Your cart is empty.

Something missing? Sign in to see items you may have added from another computer or device.

Fresh Food & Toppers

Veterinary Diets

Shop by Health Condition

Bones, Bully Sticks & Naturals

Soft & Chewy Treats

Biscuits & Cookies

Long-Lasting Chews

Freeze-Dried & Dehydrated

Lickable Treats

Health & Pharmacy

Vitamins & Supplements

Probiotics & Digestive Health

Allergy & Itch Relief

Heartworm & Dewormers

Pharmacy & Prescriptions

Anxiety & Calming Care

Crates, Pens & Gates

Tech & Smart Home

Leashes, Collars & Harnesses

Bowls & Feeders

Clothing & Accessories

Carriers & Travel

Training & Behavior

Dog Deals New Dog Supplies Pet Parent Supplies Shop all Dog

Treat Dispensing Toys

Rope & Tug Toys

Cleaning & Potty

Pee Pads & Diapers

Poop Bags & Scoopers

Cleaners & Stain Removers

Vacuums & Steam Cleaners

Brushes & Combs

Shampoos & Conditioners

Paw & Nail Care

Made by Chewy

Purina Pro Plan

Hill's

Blue Buffalo

Royal Canin

Bark

Free $30 eGift card with your $100 order of pet faves like Merrick. Exclusions apply.

Shop by Health Consideration

Veterinary Diets

Highest Quality Food

Lickable Treats

Soft & Chewy Treats

Litter Boxes & Accessories

Tech & Smart Home

Carriers & Travel

Bowls & Feeders

Collars, Leashes & Harnesses

Cat Deals Pet Parent Supplies Shop all Cat

Health & Pharmacy

Vitamins & Supplements

Probiotics & Digestive Health

Allergy & Itch Relief

Pharmacy & Prescriptions

Anxiety & Calming Care

Urinary Tract & Kidneys

Trees & Scratchers

Scratchers & Scratching Posts

Interactive & Electronic Toys

Teasers & Wands

Balls & Chasers

Plush & Mice Toys

Chewy Made

Blue Buffalo

Litter robot

Temptations

Hill's Science Diet

Purina Pro Plan

Free $30 eGift card with your $100 order of pet faves like Fancy Feast. Exclusions apply.

Health and Wellness

Vitamins and Supplements

Feeders, Waterers and Deicers

Chick Starter Feed

Nesting and Egg Supplies

Coops and Accessories

Vitamins and Healthcare

Llama and Alpaca

Livestock Supplements

Wild Bird & Wildlife

Wild Bird Feeders

Hummingbird Supplies

Duck and Waterfowl

Enclosures & Habitat Accessories

Cages and Accessories

Freshwater Fish Supplies

Saltwater Fish Supplies

Koi and Pond Supplies

Aquariums and Fish Tanks

Fish Tank Filters and Media

Aquarium Decorations

Reptile & Amphibian

Live Feeder Insects

Tanks & Terrariums

Heating & Lighting

Nutrena

Buckeye

Purina

Cosequin

Farnam

Tribute

Summer horse essentials. Shop electrolytes, fly control, supplies, and more.

Order your pet's prescription items.

Shop all Pharmacy

Health Services

Chat free with our vet team

CarePlus Pet Insurance & Wellness Plans

Compounded Medications

Choose from a variety of flavors, strengths, and forms for your pet or horse.

Learn about compounding

Prescription Flea & Tick
Heartworm Prevention
Pain Relief & Arthritis
Antibiotics & Antifungals
Allergy Relief
Anxiety & Calming
Ear & Skin Conditions
Eye Drops & Ointments
Urinary & Kidney
Diabetes Care & Insulin

Prescription Flea & Tick
Dewormers & Parasiticides
Eye Drops & Ointments
Antibiotics & Antifungals
Allergy Relief
Anxiety & Calming
Urinary & Kidney
Thyroid & Hormone
Pain Relief & Arthritis
Diabetes Care & Insulin

Joint and Anti-Inflammatory
Metabolic and Endocrine
Calming and Behavioral Support
Pain Medicine
Antibiotics
Allergy and Immune
Vitamins and Electrolytes

Expert Health Tips

PetMD

Connect with a Vet

Chat for free with a licensed vet tech.

CarePlus Pet Insurance & Wellness Plans

Give your pet the best possible health coverage with pet insurance and wellness plans.

Exceptional in-person routine and urgent care from our compassionate veterinary teams.

Schedule a visit

Food & Nutrition

Health & Wellness

Training & Behavior

Vet Recommended Dog Food

Food & Nutrition

Health & Wellness

Training & Behavior

Vet Recommended Cat Food

Feed & Nutrition

Health & Wellness

Riding & Management

Training & Behavior

Freshwater Fish

Health & Wellness

Belgian Malinois

German Shepherd

Best Dog Breed Supplies

Chewy Picks

Best Dog Supplies

Best Cat Supplies

Best Horse Supplies

Best Fish Supplies

Best Reptile Supplies

Best Bird Supplies

Best Small Animal Supplies

How We Give Back

We've donated more than $100M in products to rescue animal centers.

Donate to a Rescue

You can help us make an impact by donating items to your local shelter.

Find Pets to Adopt

Search thousands of pets from shelters and rescues in Chewy's network.

Join Our Network

Join our network to access benefits and resources that’ll help more pets.

CartCart Shopping Cart, 0 items

Free $30 eGift card with your $100 order

Shop by Brand

Milwaukee Instruments

Sort By

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 1 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 2 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 3 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 1 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 2 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 3 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 1 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 2 of 3$

$Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit slide 3 of 3$

Milwaukee Instruments Digital Salinity Refractometer Aquarium Water Test Kit

$159.88 Chewy Price$159.88

$199.00 List Price$199.00

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments MW101 pH Meter Aquarium Water Test Kit

$166.75 Chewy Price$166.75

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 1 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit slide 2 of 2

Milwaukee Instruments Digital Phosphate Aquarium Water Test Kit

$93.15 Chewy Price$93.15

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 1 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 2 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 3 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 1 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 2 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 3 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 1 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 2 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit slide 3 of 3

Milwaukee Instruments Digital Total Chlorine Aquarium Water Test Kit

$93.15 Chewy Price$93.15

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Digital Iodine Aquarium Water Test Kit

Milwaukee Instruments Digital Iodine Aquarium Water Test Kit

$93.15 Chewy Price$93.15

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Digital Iron Aquarium Water Test Kit

Milwaukee Instruments Digital Iron Aquarium Water Test Kit

$93.15 Chewy Price$93.15

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Dissolved Oxygen Meter Aquarium Water Test Kit

Milwaukee Instruments Dissolved Oxygen Meter Aquarium Water Test Kit

Rated 5 out of 5 stars

5.0

1

$328.90 Chewy Price$328.90

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Lux Aquarium Light Meter

Milwaukee Instruments Lux Aquarium Light Meter

$158.70 Chewy Price$158.70

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments pH 7.01 Calibration Solution Aquarium Water Test Kit, 230-ml bottle

Milwaukee Instruments pH 7.01 Calibration Solution Aquarium Water Test Kit, 230-ml bottle

$16.70 Chewy Price$16.70

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Waterproof 4-in-1 Aquarium Water Test Kit

Milwaukee Instruments Waterproof 4-in-1 Aquarium Water Test Kit

$219.65 Chewy Price$219.65

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Waterproof pH & Temperature Aquarium Water Test Kit

Milwaukee Instruments Waterproof pH & Temperature Aquarium Water Test Kit

$77.90 Chewy Price$77.90

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Double Junction pH Probe

Milwaukee Instruments Double Junction pH Probe

$71.30 Chewy Price$71.30

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Co2 Gas Off Solenoid Valve

Milwaukee Instruments Co2 Gas Off Solenoid Valve

$94.88 Chewy Price$94.88

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Aquarium Co2 Flow Pressure Regulator with Solenoid Valve

Milwaukee Instruments Aquarium Co2 Flow Pressure Regulator with Solenoid Valve

$156.75 Chewy Price$156.75

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Digital TDS Pen Aquarium Water Test Kit

Milwaukee Instruments Digital TDS Pen Aquarium Water Test Kit

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Digital Conductivity Pen EC Aquarium Water Test Kit

Milwaukee Instruments Digital Conductivity Pen EC Aquarium Water Test Kit

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Waterproof 3-in1 EC, TDS & Temperature Aquarium Water Test Kit

Milwaukee Instruments Waterproof 3-in1 EC, TDS & Temperature Aquarium Water Test Kit

$77.90 Chewy Price$77.90

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments pH 7.01 Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 count

Milwaukee Instruments pH 7.01 Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 c...

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments pH 10.01 Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 count

Milwaukee Instruments pH 10.01 Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 ...

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments 12880 µS/cm Conductivity Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 count

Milwaukee Instruments 12880 µS/cm Conductivity Calibration Solution Sachets Aquarium Water Test...

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments 1413 µS/cm Conductivity Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 count

Milwaukee Instruments 1413 µS/cm Conductivity Calibration Solution Sachets Aquarium Water Test ...

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments 6.44 ppt TDS Calibration Solution Sachets Aquarium Water Test Kit, 20-ml, 25 count

Milwaukee Instruments 6.44 ppt TDS Calibration Solution Sachets Aquarium Water Test Kit, 20-ml,...

$34.50 Chewy Price$34.50

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments pH Monitor Aquarium Water Test Kit

Milwaukee Instruments pH Monitor Aquarium Water Test Kit

$139.99 Chewy Price$139.99

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments pH Controller Aquarium Water Test Kit

Milwaukee Instruments pH Controller Aquarium Water Test Kit

$209.99 Chewy Price$209.99

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments Cleaning Solution for pH Electrodes Aquarium Maintenance Kit, 230-ml bottle

Milwaukee Instruments Cleaning Solution for pH Electrodes Aquarium Maintenance Kit, 230-ml bott...

$16.70 Chewy Price$16.70

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments pH, EC, Tempature Monitor Aquarium Water Test Kit

Milwaukee Instruments pH, EC, Tempature Monitor Aquarium Water Test Kit

$308.20 Chewy Price$308.20

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments 1413 µS/cm Conductivity Solution Aquarium Water Test Kit, 230-ml bottle

Milwaukee Instruments 1413 µS/cm Conductivity Solution Aquarium Water Test Kit, 230-ml bottle

$16.70 Chewy Price$16.70

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments 12880 µS/cm Conductivity Calibration Solution Aquarium Water Test Kit, 230-ml bottle

Milwaukee Instruments 12880 µS/cm Conductivity Calibration Solution Aquarium Water Test Kit, 23...

$16.70 Chewy Price$16.70

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Powder Reagents Low-Range Phosphate Photometer Aquarium Water Test Kit, 25 count

Milwaukee Instruments Powder Reagents Low-Range Phosphate Photometer Aquarium Water Test Kit, 2...

$12.95 Chewy Price$12.95

($0.52/ea) Price per Unit($0.52/ea)

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Powder Reagents for Free Chlorine Photometer Aquarium Water Test Kit, 100 count

Milwaukee Instruments Powder Reagents for Free Chlorine Photometer Aquarium Water Test Kit, 100...

$34.50 Chewy Price$34.50

($0.35/ea) Price per Unit($0.35/ea)

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Powder Reagents for Iodine Photometer Aquarium Water Test Kit, 25 count

Milwaukee Instruments Powder Reagents for Iodine Photometer Aquarium Water Test Kit, 25 count

$12.95 Chewy Price$12.95

($0.52/ea) Price per Unit($0.52/ea)

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Powder Reagents for Total Chlorine Photometer Aquarium Water Test Kit, 100 count

Milwaukee Instruments Powder Reagents for Total Chlorine Photometer Aquarium Water Test Kit, 10...

$34.50 Chewy Price$34.50

($0.35/ea) Price per Unit($0.35/ea)

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Powder Reagents for Iron Photometer Aquarium Water Test Kit, 25 count

Milwaukee Instruments Powder Reagents for Iron Photometer Aquarium Water Test Kit, 25 count

$12.95 Chewy Price$12.95

($0.52/ea) Price per Unit($0.52/ea)

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Digital Free Chlorine Aquarium Water Tester

Milwaukee Instruments Digital Free Chlorine Aquarium Water Tester

$93.15 Chewy Price$93.15

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Milwaukee Instruments pH electrode Storage Solution Aquarium Maintenance Kit, 230-ml bottle

Milwaukee Instruments pH electrode Storage Solution Aquarium Maintenance Kit, 230-ml bottle

$16.70 Chewy Price$16.70

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Milwaukee Instruments Digital pH Pen Aquarium Water Test Kit

Out of Stock

Milwaukee Instruments Digital pH Pen Aquarium Water Test Kit

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Category

Fish & Aquarium Supplies

Brand

Find a brand

7 Brands are shown below

10 Strawberry Street

2 Hounds Design

Product Category

Health & Wellness

Cleaning & Waste Management

Price

Customer Rating

Rated 4 out of 5 stars

Rated 3 out of 5 stars

Rated 2 out of 5 stars

Rated 1 out of 5 stars