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630.238.9292

Welcome to The MCI Store!

You can visit one of the categories below or to search The MCI Store, please scroll down to the bottom of the page and click Search Products. If you cannot find a product, need additional information on a product, need shipping details, or have questions, you're welcome to contact our helpful customer service associates at customerservice@masterscoinc.com or call 630-238-9292. We're happy to help!

Lab Supplies & Equipment

Lab Supplies & Equipment

Specialty Products

Specialty Products

Test Kits & Meters

Test Kits & Meters

Testing Services & Laboratory Analysis

Testing Services & Laboratory Analysis

Featured Products

Alkalinity Test Standard Solution "P&M"

Alkalinity Test Standard Solution "P&M"

Alkalinity Test Standard Solution "P&M"

SKU 001/-E

Alkalinity Test Standard Solution "OH"

Alkalinity Test Standard Solution "OH"

Alkalinity Test Standard Solution "OH"

SKU 001-H/-E

Chelant Test Standard Solution (Free/Residual)
(10 ppm as 38% EDTA)

Chelant Test Standard Solution (Free/Residual) (10 ppm as 38% EDTA)

Chelant Test Standard Solution (Free/Residual) (10 ppm as 38% EDTA)

SKU 003/-E

Chelant Test Standard Solution (Total) (10 ppm as 100% TC)

Chelant Test Standard Solution (Total) (10 ppm as 100% TC)

Chelant Test Standard Solution (Total) (10 ppm as 100% TC)

SKU 003-TC/-E

Chloride Test Standard Solution

Chloride Test Standard Solution

Chloride Test Standard Solution

SKU 004/-E

Test Tube 2.5, 5.0, 10.0 ml, Plastic with Cap

Test Tube 2.5, 5.0, 10.0 ml, Plastic with Cap

Test Tube 2.5, 5.0, 10.0 ml, Plastic with Cap

SKU 0106

Hardness Test Standard Solution Total

Hardness Test Standard Solution Total

Hardness Test Standard Solution Total

SKU 006/-E

Molybdenum Test Standard Solution

Molybdenum Test Standard Solution

Molybdenum Test Standard Solution

SKU 007/-E

Sodium Nitrite Test Standard Solution

Sodium Nitrite Test Standard Solution

Sodium Nitrite Test Standard Solution

SKU 008-SN/-E

PDQ Organo Phosphonate Test Standard Solution (20 Pouches/Box)

PDQ Organo Phosphonate Test Standard Solution (20 Pouches/Box)

PDQ Organo Phosphonate Test Standard Solution (20 Pouches/Box)

SKU 008PDQ/10-P

Organo Phosphonate Test Standard Solution (20 Pouches/Box)

Organo Phosphonate Test Standard Solution (20 Pouches/Box)

Organo Phosphonate Test Standard Solution (20 Pouches/Box)

SKU 009/-P

Phosphate-Ortho Test Standard Solution

Phosphate-Ortho Test Standard Solution

Phosphate-Ortho Test Standard Solution

SKU 010/-E

Sodium Molybdate Test Standard Solution

Sodium Molybdate Test Standard Solution

Sodium Molybdate Test Standard Solution

SKU 012/-E

Nitrite Test Standard Solution

Nitrite Test Standard Solution

Nitrite Test Standard Solution

SKU 013/-E

Polymer Standard Test Solution (10 ppm Active Polymer) (20 Pouches/Box)

Polymer Standard Test Solution (10 ppm Active Polymer) (20 Pouches/Box)

Polymer Standard Test Solution (10 ppm Active Polymer) (20 Pouches/Box)

SKU 018/10-P

Barium Chloride Solution 10%

Barium Chloride Solution 10%

Barium Chloride Solution 10%

SKU 101

pH Buffer Solution 4.01 pH (Color Coded Red)

pH Buffer Solution 4.01 pH (Color Coded Red)

pH Buffer Solution 4.01 pH (Color Coded Red)

SKU 104

pH Buffer Solution 7.00 pH (Color Coded Green)

pH Buffer Solution 7.00 pH (Color Coded Green)

pH Buffer Solution 7.00 pH (Color Coded Green)

SKU 105

pH Buffer Solution 10.00 pH (Color Coded Blue)

pH Buffer Solution 10.00 pH (Color Coded Blue)

pH Buffer Solution 10.00 pH (Color Coded Blue)

SKU 106

Calcium Buffer Solution *(HM)

Calcium Buffer Solution *(HM)

Calcium Buffer Solution *(HM)

SKU 107

Calcium Indicator Powder (Murexide) (w/#402 Scoop)

Calcium Indicator Powder (Murexide) (w/#402 Scoop)

Calcium Indicator Powder (Murexide) (w/#402 Scoop)

SKU 109

Calcium Indicator Powder (HNB) (w/#402 Scoop)

Calcium Indicator Powder (HNB) (w/#402 Scoop)

Calcium Indicator Powder (HNB) (w/#402 Scoop)

SKU 110

Ceric Sulfate Titrating Solution (0.11N)
(1 ml=50 ppm NO2/50 ml)

Ceric Sulfate Titrating Solution (0.11N) (1 ml=50 ppm NO2/50 ml)

Ceric Sulfate Titrating Solution (0.11N) (1 ml=50 ppm NO2/50 ml)

SKU 111

Ceric Sulfate Titrating Solution (0.22N)
(1 ml=100 ppm NO2/50 ml)

Ceric Sulfate Titrating Solution (0.22N) (1 ml=100 ppm NO2/50 ml)

Ceric Sulfate Titrating Solution (0.22N) (1 ml=100 ppm NO2/50 ml)

SKU 113

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/100

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/500

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/1000

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/1500

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/2000

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/3000

Conductivity Test Standard Solution

Conductivity Test Standard Solution

Conductivity Test Standard Solution

SKU 117/5000

Apron, All Purpose 16 ml, One Size, Black

Apron, All Purpose 16 ml, One Size, Black

Apron, All Purpose 16 ml, One Size, Black

SKU 1205

Conductivity Neutralizing Solution

Conductivity Neutralizing Solution

Conductivity Neutralizing Solution

SKU 121

Field Test Case, Professional Sales Associates Version (20"x14"x7")

Field Test Case, Professional Sales Associates Version (20"x14"x7")

Field Test Case, Professional Sales Associates Version (20"x14"x7")

SKU 1007

Comparator, Low Range for Copper Test Kit

Comparator, Low Range for Copper Test Kit

Comparator, Low Range for Copper Test Kit

SKU 1102

Eyewash Station, Flash Flood® Emergency Station

Eyewash Station, Flash Flood® Emergency Station

Eyewash Station, Flash Flood® Emergency Station

SKU 1224

Eyewash Station Solution, 4 x 1 Gallon Bottles/Case

Eyewash Station Solution, 4 x 1 Gallon Bottles/Case

Eyewash Station Solution, 4 x 1 Gallon Bottles/Case

SKU 1224-S

First Aid Kit, Johnson & Johnson, Supplies to Serve 50 people

First Aid Kit, Johnson & Johnson, Supplies to Serve 50 people

First Aid Kit, Johnson & Johnson, Supplies to Serve 50 people

SKU 1225

Latex Gloves-Powder Free, 5 ml

Latex Gloves-Powder Free, 5 ml

Latex Gloves-Powder Free, 5 ml

SKU 1206

Latex Gloves-Powdered, 5 ml

Latex Gloves-Powdered, 5 ml

Latex Gloves-Powdered, 5 ml

SKU 1291

Nitrile Gloves-Powder Free, 6 ml

Nitrile Gloves-Powder Free, 6 ml

Nitrile Gloves-Powder Free, 6 ml

SKU 1243

Nitrile Gloves-Powdered, 6 ml

Nitrile Gloves-Powdered, 6 ml

Nitrile Gloves-Powdered, 6 ml

SKU 1263

Safety Glasses, Plastic with Side Panels

Safety Glasses, Plastic with Side Panels

Safety Glasses, Plastic with Side Panels

SKU 1214

Dust Mask, Standard (50/Box)

Dust Mask, Standard (50/Box)

Dust Mask, Standard (50/Box)

SKU 1287

Test Tube 2.5, 5.0, 10.0 ml, Glass with Cap

Test Tube 2.5, 5.0, 10.0 ml, Glass with Cap

Test Tube 2.5, 5.0, 10.0 ml, Glass with Cap

SKU 0844

Nitrite Indicator Solution

Nitrite Indicator Solution

Nitrite Indicator Solution

SKU 129

Fluoride Suppression Agent

Fluoride Suppression Agent

Fluoride Suppression Agent

SKU 130

Gallic Acid Powder (w/#408 Scoop)

Gallic Acid Powder (w/#408 Scoop)

Gallic Acid Powder (w/#408 Scoop)

SKU 131

Hardness Buffer Powder (w/#402 Scoop)

Hardness Buffer Powder (w/#402 Scoop)

Hardness Buffer Powder (w/#402 Scoop)

SKU 135

Hardness Buffer Solution (Ammonia/Ammonium Chloride)

Hardness Buffer Solution (Ammonia/Ammonium Chloride)

Hardness Buffer Solution (Ammonia/Ammonium Chloride)

SKU 137NR

Hardness Buffer Solution (Odorless)

Hardness Buffer Solution (Odorless)

Hardness Buffer Solution (Odorless)

SKU 138

Hardness Indicator Powder (Calmagite) (w/#402 Scoop)

Hardness Indicator Powder (Calmagite) (w/#402 Scoop)

Hardness Indicator Powder (Calmagite) (w/#402 Scoop)

SKU 139

Hardness Indicator Powder (EBT) (w/#402 Scoop)

Hardness Indicator Powder (EBT) (w/#402 Scoop)

Hardness Indicator Powder (EBT) (w/#402 Scoop)

SKU 140

Hardness Indicator Buffer Powder (HIBP) (w/#402 Scoop)

Hardness Indicator Buffer Powder (HIBP) (w/#402 Scoop)

Hardness Indicator Buffer Powder (HIBP) (w/#402 Scoop)

SKU 141

Hardness Indicator Buffer Solution (HIBS)

Hardness Indicator Buffer Solution (HIBS)

Hardness Indicator Buffer Solution (HIBS)

SKU 143

Hardness Titrating Solution (1 ml = 1 ppm CaCO3/50 ml)

Hardness Titrating Solution (1 ml = 1 ppm CaCO3/50 ml)

Hardness Titrating Solution (1 ml = 1 ppm CaCO3/50 ml)

SKU 144

Hardness Titrating Solution (1 ml = 20 ppm CaCO3/50 ml)

Hardness Titrating Solution (1 ml = 20 ppm CaCO3/50 ml)

Hardness Titrating Solution (1 ml = 20 ppm CaCO3/50 ml)

SKU 145

Octa-Slide Viewer

Octa-Slide Viewer

Octa-Slide Viewer

SKU 1101-14

Comparator Base

Comparator Base

Comparator Base

SKU 145000

Comparator D55 with mirror optics (path length 55 mm)

Comparator D55 with mirror optics (path length 55 mm)

Comparator D55 with mirror optics (path length 55 mm)

SKU 145010

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