Patio & GardenHome ImprovementParty & OccasionsHomePetsFoodHealth and MedicineIndustrial & ScientificShop by BrandSubscriptionsFeature
Sort by|
Patio & GardenHome ImprovementParty & OccasionsHomePetsFoodHealth and MedicineIndustrial & ScientificShop by BrandSubscriptionsFeature

Phosphorus Testing Kit

Uses item details. Price when purchased online

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab $15.79

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab
Sponsored
current price $15.79

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab

4.7 out of 5 stars
4.7 out of 5 Stars. 449 reviews

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost $12.98

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost
Sponsored
current price $12.98

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost

4.3 out of 5 stars
4.3 out of 5 Stars. 52 reviews

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients ，Soil Tester for Garden Nutrients, 1Set $28.80

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients ，Soil Tester for Garden Nutrients, 1Set
Sponsored
current price $28.80

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients ，Soil Tester for Garden Nutrients, 1Set

2-in-1 Complete 100 Pcs Soil Test Kit for pH & Nitrogen – Includes Soil Sampling Spoon & Centrifuge Tube – Accurate & Easy-to-Use Soil Tester for Garden, Lawn & Plants Care $19.99

2-in-1 Complete 100 Pcs Soil Test Kit for pH & Nitrogen – Includes Soil Sampling Spoon & Centrifuge Tube – Accurate & Easy-to-Use Soil Tester for Garden, Lawn & Plants Care
Sponsored
current price $19.99

2-in-1 Complete 100 Pcs Soil Test Kit for pH & Nitrogen – Includes Soil Sampling Spoon & Centrifuge Tube – Accurate & Easy-to-Use Soil Tester for Garden, Lawn & Plants Care

5 out of 5 stars
5 out of 5 Stars. 5 reviews

Soil Master pH, Nitrogen, Phosphorus, Potassium Soil Test Kit, 40 Tests $15.99

Soil Master pH, Nitrogen, Phosphorus, Potassium Soil Test Kit, 40 Tests
current price $15.99

Soil Master pH, Nitrogen, Phosphorus, Potassium Soil Test Kit, 40 Tests

4.6 out of 5 stars
4.6 out of 5 Stars. 56 reviews

Best seller, LabTech LT5010 H2O OK Drinking Water Test Strips Kit, 10 Tests, 0.058 lb From $9.98

Best seller
LabTech LT5010 H2O OK Drinking Water Test Strips Kit, 10 Tests, 0.058 lb
Available in additional 3 options
Options
From$998

LabTech LT5010 H2O OK Drinking Water Test Strips Kit, 10 Tests, 0.058 lb

4.2 out of 5 stars
4.2 out of 5 Stars. 184 reviews

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients Soil Tester for Garden Nutrients, 1Set $28.80

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients Soil Tester for Garden Nutrients, 1Set
current price $28.80

Soil Test Kit, Nitrogen Phosphorus Potassium Test Kit for Agriculture Gardening Lawn Yard Testing Tester for Garden Nutrients Soil Tester for Garden Nutrients, 1Set

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count $11.99 Was $21.99

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count
current price Now $11.99, Was $21.99

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count

4.6 out of 5 stars
4.6 out of 5 Stars. 37 reviews

AquaChek One-Minute Phosphate Test for Swimming Pools $16.93

AquaChek One-Minute Phosphate Test for Swimming Pools
current price $16.93

AquaChek One-Minute Phosphate Test for Swimming Pools

5 out of 5 stars
5 out of 5 Stars. 15 reviews

Soil Test Kit for Home and Farm Gardening, Easy Nitrogen Phosphorus Potassium Detection $9.07

Soil Test Kit for Home and Farm Gardening, Easy Nitrogen Phosphorus Potassium Detection
current price $9.07

Soil Test Kit for Home and Farm Gardening, Easy Nitrogen Phosphorus Potassium Detection

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count $11.99 Was $21.99

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count
Sponsored
current price Now $11.99, Was $21.99

MERYDI Drinking Water Testing Kit 16 in 1 Test Strips for Well & Tap Water 100 Count

4.6 out of 5 stars
4.6 out of 5 Stars. 37 reviews

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost $12.98

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost
current price $12.98

Garden Tutor Soil pH Test Kit, 100 Test Strips with AI Web Reader, Fast Accurate Soil Testing for Garden, Lawn, Vegetables Compost

4.3 out of 5 stars
4.3 out of 5 Stars. 52 reviews

Salifert Phosphate Test Kit $18.69

Salifert Phosphate Test Kit
current price $18.69

Salifert Phosphate Test Kit

Rapitest Soil Tester Kit for pH Nitrogen Phosphorus Potash, 40 Testers $21.41

Rapitest Soil Tester Kit for pH Nitrogen Phosphorus Potash, 40 Testers
current price $21.41

Rapitest Soil Tester Kit for pH Nitrogen Phosphorus Potash, 40 Testers

Jopdsy 20 in 1 Drinking Water Test Strips, 143 Pack Well Tap Water Test Kit, Test pH Hardness Chlorine Lead Iron Copper Bacteria Ammonia Phosphate Heavy Metals $16.98

Jopdsy 20 in 1 Drinking Water Test Strips, 143 Pack Well Tap Water Test Kit, Test pH Hardness Chlorine Lead Iron Copper Bacteria Ammonia Phosphate Heavy Metals
current price $16.98

Jopdsy 20 in 1 Drinking Water Test Strips, 143 Pack Well Tap Water Test Kit, Test pH Hardness Chlorine Lead Iron Copper Bacteria Ammonia Phosphate Heavy Metals

Best seller, EASYTEST 20 in 1 Drinking Water Test Kit - Well Water Testing Kit - Water Test Strip for House Water for pH, Hardness, Chlorine, Lead, Iron, Bacteria & More $16.79 Was $39.98

Best seller
EASYTEST 20 in 1 Drinking Water Test Kit - Well Water Testing Kit - Water Test Strip for House Water for pH, Hardness, Chlorine, Lead, Iron, Bacteria & More
current price Now $16.79, Was $39.98

EASYTEST 20 in 1 Drinking Water Test Kit - Well Water Testing Kit - Water Test Strip for House Water for pH, Hardness, Chlorine, Lead, Iron, Bacteria & More

4.4 out of 5 stars
4.4 out of 5 Stars. 134 reviews

Best seller, All-New 16 in 1 Drinking Water Testing Kit 125 Strips - Home Tap and Well Water Test Kit for Hardness, Lead, Iron, Copper, Chlorine, Nitrate, Nitrite, pH, etc $13.98

Best seller
All-New 16 in 1 Drinking Water Testing Kit 125 Strips - Home Tap and Well Water Test Kit for Hardness, Lead, Iron, Copper, Chlorine, Nitrate, Nitrite, pH, etc
current price $13.98

All-New 16 in 1 Drinking Water Testing Kit 125 Strips - Home Tap and Well Water Test Kit for Hardness, Lead, Iron, Copper, Chlorine, Nitrate, Nitrite, pH, etc

4.4 out of 5 stars
4.4 out of 5 Stars. 96 reviews

FW/SW PHOSPHATE TEST KIT $16.11

FW/SW PHOSPHATE TEST KIT
current price $16.11

FW/SW PHOSPHATE TEST KIT

2.8 out of 5 stars
2.8 out of 5 Stars. 4 reviews

50ml Soil Test Kit pH Nitrogen Phosphorus Potassium Meter for Home Farm Agriculture Gardening $11.96

50ml Soil Test Kit pH Nitrogen Phosphorus Potassium Meter for Home Farm Agriculture Gardening
current price $11.96

50ml Soil Test Kit pH Nitrogen Phosphorus Potassium Meter for Home Farm Agriculture Gardening

Kitchen Tools Soil Phosphorus Test Kit, Soil Test Solution Accurate for Agriculture for Gardening $10.38 Was $11.79

Kitchen Tools Soil Phosphorus Test Kit, Soil Test Solution Accurate for Agriculture for Gardening
current price Now $10.38, Was $11.79

Kitchen Tools Soil Phosphorus Test Kit, Soil Test Solution Accurate for Agriculture for Gardening

BANIRO Phosphate Test Kit for Pools and Aquariums, Quick Water Quality Detection Strips with Color Chart for Fish Tanks, Ponds $8.62

BANIRO Phosphate Test Kit for Pools and Aquariums, Quick Water Quality Detection Strips with Color Chart for Fish Tanks, Ponds
current price $8.62

BANIRO Phosphate Test Kit for Pools and Aquariums, Quick Water Quality Detection Strips with Color Chart for Fish Tanks, Ponds

Natural Chemistry 00081v Consumer Phosphate Test Kit $24.56

Natural Chemistry 00081v Consumer Phosphate Test Kit
current price $24.56

Natural Chemistry 00081v Consumer Phosphate Test Kit

BANIRO Pool Phosphate Test Kit (50 Count), Accurate Water Testing Strips for Swimming Pools & Hot Tubs, Easy to Read $12.75 Was $15.66

BANIRO Pool Phosphate Test Kit (50 Count), Accurate Water Testing Strips for Swimming Pools & Hot Tubs, Easy to Read
current price Now $12.75, Was $15.66

BANIRO Pool Phosphate Test Kit (50 Count), Accurate Water Testing Strips for Swimming Pools & Hot Tubs, Easy to Read

BANIRO Phosphate Test Kit,Pool Phosphate Test Kit,Phosphate Test Strips,50 Strips Phosphate Test Strip Quick And Accurate Swimming Hot Tub And Spa Water Testing $9.92

BANIRO Phosphate Test Kit,Pool Phosphate Test Kit,Phosphate Test Strips,50 Strips Phosphate Test Strip Quick And Accurate Swimming Hot Tub And Spa Water Testing
current price $9.92

BANIRO Phosphate Test Kit,Pool Phosphate Test Kit,Phosphate Test Strips,50 Strips Phosphate Test Strip Quick And Accurate Swimming Hot Tub And Spa Water Testing

Soil Test Solution Kit Plastic Liquid PH Nitrogen Phosphorus Potassium Measuring Kit for Home Farm Agriculture Gardening 50ml $9.98

Soil Test Solution Kit Plastic Liquid PH Nitrogen Phosphorus Potassium Measuring Kit for Home Farm Agriculture Gardening 50ml
current price $9.98

Soil Test Solution Kit Plastic Liquid PH Nitrogen Phosphorus Potassium Measuring Kit for Home Farm Agriculture Gardening 50ml

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm $12.56

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm
current price $12.56

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm

Natural Chemistry 00080 Phosphate Test Kit $60.69

Natural Chemistry 00080 Phosphate Test Kit
current price $60.69

Natural Chemistry 00080 Phosphate Test Kit

4 in 1 Soil Test Kit for pH Ammonia Nitrogen Phosphorus & Potassium Comprehensive Soil Analysis Tool for Garden and Farm $13.06

4 in 1 Soil Test Kit for pH Ammonia Nitrogen Phosphorus & Potassium Comprehensive Soil Analysis Tool for Garden and Farm
current price $13.06

4 in 1 Soil Test Kit for pH Ammonia Nitrogen Phosphorus & Potassium Comprehensive Soil Analysis Tool for Garden and Farm

GJX Phosphate Test Kit for Pool/Aquarium/WaterIncludes Test Strips and Color Chart for Quick Detection of Phosphate Levels, Suitable for Ponds, Drinking Water $9.85

GJX Phosphate Test Kit for Pool/Aquarium/WaterIncludes Test Strips and Color Chart for Quick Detection of Phosphate Levels, Suitable for Ponds, Drinking Water
current price $9.85

GJX Phosphate Test Kit for Pool/Aquarium/WaterIncludes Test Strips and Color Chart for Quick Detection of Phosphate Levels, Suitable for Ponds, Drinking Water

MERYDI 8 Way Aquarium Water Test Strips, 150 Strips for Saltwater Freshwater Aquariums, Pond and Fish Tanks Testing pH Ammonia Hardness $8.99 Was $9.99

MERYDI 8 Way Aquarium Water Test Strips, 150 Strips for Saltwater Freshwater Aquariums, Pond and Fish Tanks Testing pH Ammonia Hardness
current price Now $8.99, Was $9.99

MERYDI 8 Way Aquarium Water Test Strips, 150 Strips for Saltwater Freshwater Aquariums, Pond and Fish Tanks Testing pH Ammonia Hardness

4.7 out of 5 stars
4.7 out of 5 Stars. 50 reviews

Lamotte Phosphate (Low Range) Water Test Kit $127.85

Lamotte Phosphate (Low Range) Water Test Kit
current price $127.85

Lamotte Phosphate (Low Range) Water Test Kit

PH Meter, TDS PPM Meter, 4-in-1 Soil PH Tester, PH/EC Digital Kit, 3 Pack for Home Water, Hydroponics, Botanical Garden Soil and Aquarium Use $20.69

PH Meter, TDS PPM Meter, 4-in-1 Soil PH Tester, PH/EC Digital Kit, 3 Pack for Home Water, Hydroponics, Botanical Garden Soil and Aquarium Use
current price $20.69

PH Meter, TDS PPM Meter, 4-in-1 Soil PH Tester, PH/EC Digital Kit, 3 Pack for Home Water, Hydroponics, Botanical Garden Soil and Aquarium Use

3.6 out of 5 stars
3.6 out of 5 Stars. 56 reviews

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm $13.02

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm
current price $13.02

10ml 4 In 1 Soil Test Kit PH Ammonia Nitrogen Phosphorus Potassium Fertility Test Reagent Solution Acidity Meter For Garden Farm

Lamotte Garden Kit, Measure Nitrogen, Phosphorus, Soil Ph $94.45

Lamotte Garden Kit, Measure Nitrogen, Phosphorus, Soil Ph
current price $94.45

Lamotte Garden Kit, Measure Nitrogen, Phosphorus, Soil Ph

5 out of 5 stars
5 out of 5 Stars. 4 reviews

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab $15.79

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab
current price $15.79

2San Home Water Test, 8-in-1 Water Testing for Bacteria, Lead, Iron, Copper, pH, Chlorine, Hardness, Nitrites, Easy At-Home Use for Tap & Well Water, Fast, Reliable Results Without a Lab

4.7 out of 5 stars
4.7 out of 5 Stars. 449 reviews

Seaoura 9-in-1 Aquarium Test Kit 135 Strips, pH Nitrate Nitrite Water Test for Fish Tanks & Ponds From $8.99

Seaoura 9-in-1 Aquarium Test Kit 135 Strips, pH Nitrate Nitrite Water Test for Fish Tanks & Ponds
Available in additional 2 options
Options
From$899

Seaoura 9-in-1 Aquarium Test Kit 135 Strips, pH Nitrate Nitrite Water Test for Fish Tanks & Ponds

4.7 out of 5 stars
4.7 out of 5 Stars. 7 reviews

OOKWE Soil PH Test Solution Phosphorus N1 Nitrate P1 Potassium K1 K2 Extractant Testing Reagent Kit $10.63

OOKWE Soil PH Test Solution Phosphorus N1 Nitrate P1 Potassium K1 K2 Extractant Testing Reagent Kit
current price $10.63

OOKWE Soil PH Test Solution Phosphorus N1 Nitrate P1 Potassium K1 K2 Extractant Testing Reagent Kit

Luster Leaf 1605 Digital Soil Kit for pH, N, P and K, 25 Tests $28.90

Luster Leaf 1605 Digital Soil Kit for pH, N, P and K, 25 Tests
current price $28.90

Luster Leaf 1605 Digital Soil Kit for pH, N, P and K, 25 Tests

4.5 out of 5 stars
4.5 out of 5 Stars. 2 reviews

Best seller, Tetra 5-in-1 EasyStrips Accurate Aquarium Test Kit, for Freshwater and Saltwater, 25 Count From $13.24

Best seller
Tetra 5-in-1 EasyStrips Accurate Aquarium Test Kit, for Freshwater and Saltwater, 25 Count
Available in additional 4 options
Options
From$1324

Tetra 5-in-1 EasyStrips Accurate Aquarium Test Kit, for Freshwater and Saltwater, 25 Count

4.6 out of 5 stars
4.6 out of 5 Stars. 206 reviews

GJX 2026 New Soil Fertility Detector,For Nitrogen,Phosphorus and Potassium Analyzer,Soil Ph and Ec Tester,Soil Acidometer Test for Garden, Farm, Plants, Agriculture, Soil Testing, Crops, Lawns. $8.52

GJX 2026 New Soil Fertility Detector,For Nitrogen,Phosphorus and Potassium Analyzer,Soil Ph and Ec Tester,Soil Acidometer Test for Garden, Farm, Plants, Agriculture, Soil Testing, Crops, Lawns.
current price $8.52

GJX 2026 New Soil Fertility Detector,For Nitrogen,Phosphorus and Potassium Analyzer,Soil Ph and Ec Tester,Soil Acidometer Test for Garden, Farm, Plants, Agriculture, Soil Testing, Crops, Lawns.

3 out of 5 stars
3 out of 5 Stars. 1 reviews

lanema Soil Test Set, Nitrogen Phosphor Potassium Soil Test Liquid Solution Tool $9.51

lanema Soil Test Set, Nitrogen Phosphor Potassium Soil Test Liquid Solution Tool
current price $9.51

lanema Soil Test Set, Nitrogen Phosphor Potassium Soil Test Liquid Solution Tool

3 out of 5 stars
3 out of 5 Stars. 1 reviews

Bartovation Phosphorous and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strips] $24.74

Bartovation Phosphorous and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strips]
current price $24.74

Bartovation Phosphorous and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strips]

Sulaicai Soil Test Kit, 5-in-1 PH Nitrogen Phosphorus Potassium Tester, Home Garden Lawn Soil Analyzer, Plastic Dropper Bottles $14.97

Sulaicai Soil Test Kit, 5-in-1 PH Nitrogen Phosphorus Potassium Tester, Home Garden Lawn Soil Analyzer, Plastic Dropper Bottles
current price $14.97

Sulaicai Soil Test Kit, 5-in-1 PH Nitrogen Phosphorus Potassium Tester, Home Garden Lawn Soil Analyzer, Plastic Dropper Bottles

Soil Test Kit pH Nitrogen Phosphorus Potassium Measuring Solution For Garden Farm Lawn Yard Garden Outdoor Living Decor $12.36

Soil Test Kit pH Nitrogen Phosphorus Potassium Measuring Solution For Garden Farm Lawn Yard Garden Outdoor Living Decor
current price $12.36

Soil Test Kit pH Nitrogen Phosphorus Potassium Measuring Solution For Garden Farm Lawn Yard Garden Outdoor Living Decor

Lupo 3-in-1 Pool Test Kit | Pool Testing Kit for Residential Swimming Pools & Spas for Testing Total Chlorine, Total Bromine & pH $9.99

Lupo 3-in-1 Pool Test Kit | Pool Testing Kit for Residential Swimming Pools & Spas for Testing Total Chlorine, Total Bromine & pH
current price $9.99

Lupo 3-in-1 Pool Test Kit | Pool Testing Kit for Residential Swimming Pools & Spas for Testing Total Chlorine, Total Bromine & pH

Top deals

Popular in Phosphorus Testing Kit