Bleach Indicators | McMaster-Carr

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134 Products

About Pipe Size

About Pressure Gauges

Bottom Connection

These gauges have a glycerin-filled dial that reduces needle flutter for precise readings in high-vibration applications reaching 2,000 psi. A 316 stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Use them with pumps, filters, regulators, and in process lines to measure and display pressure.

304 Stainless Steel Case with 316 Stainless Steel Connection—Dual Scale (psi, kPa)

For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
Accuracy: ±1.6% Full Scale (Not Graded)

Available Pressure Gauges
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
2 1/2" Dial Diameter
0 to 15	0 to 100	0.2	2	3	20
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 700	2	10	20	100
0 to 160	0 to 1,100	2	20	20	200
0 to 200	0 to 1,400	5	20	40	200
0 to 300	0 to 2,000	5	50	50	400
0 to 400	0 to 2,800	10	100	50	500
0 to 600	0 to 4,000	10	100	100	1,000
0 to 1,000	0 to 7,000	20	100	200	1,000
0 to 2,000	0 to 14,000	50	200	400	2,000
4" Dial Diameter
0 to 15	0 to 100	0.1	2	2	20
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 700	2	10	20	100
0 to 160	0 to 1,100	2	20	20	200
0 to 200	0 to 1,400	5	50	50	200
0 to 300	0 to 2,000	5	50	50	500
0 to 400	0 to 2,800	10	100	50	500
0 to 600	0 to 4,000	10	100	100	800
0 to 1,000	0 to 7,000	20	100	200	1,000
0 to 2,000	0 to 14,000	50	200	400	2,000

						Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Guard Material	Mounting Orientation		Each
NPT Female
2 1/2"	1/4	35° to 140°	0° to 210°	316 Stainless Steel	Any	000000	0000000
2 1/2"	1/2	35° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000
4"	1/4	35° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000
4"	1/2	35° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000

High-Pressure Gauges for Chemicals

Bottom Connection

A 316 stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Gauges are commonly used with pumps, filters, regulators, and in process lines to measure and display pressures up to 2,000 psi.

304 Stainless Steel Case with 316 Stainless Steel Connection—Dual Scale (psi, kPa)

For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
Accuracy: ±1.6% Full Scale (Not Graded)

Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
2 1/2" Dial Diameter
0 to 200	0 to 1,400	5	20	40	200
0 to 300	0 to 2,000	5	50	50	400
0 to 400	0 to 2,800	5	50	50	500
0 to 600	0 to 4,000	10	100	100	1,000
0 to 1,000	0 to 7,000	20	100	200	1,000
0 to 2,000	0 to 14,000	50	200	400	2,000
4" Dial Diameter
0 to 200	0 to 1,400	5	50	50	200
0 to 300	0 to 2,000	5	50	50	500
0 to 400	0 to 2,800	5	50	50	500
0 to 600	0 to 4,000	10	100	100	800
0 to 1,000	0 to 7,000	20	100	200	1,000
0 to 2,000	0 to 14,000	50	200	400	2,000

						Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Guard Material	Mounting Orientation		Each
NPT Female
2 1/2"	1/4	-40° to 140°	0° to 210°	316 Stainless Steel	Any	000000	0000000
2 1/2"	1/2	-40° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000
4"	1/4	-40° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000
4"	1/2	-40° to 140°	0° to 210°	316 Stainless Steel	Any	000000	000000

Low-Pressure Gauges for Chemicals

With 316 Stainless Steel Guard

With PVC Guard

With CPVC Guard

Bottom Connection (Steel Guard)

Bottom Connection (Plastic Guard)

A plastic or stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Use them with pumps, filters, regulators, and in process lines to measure and display pressures.

Polypropylene and 316 stainless steel guards are more chemical resistant than PVC and CPVC guards.

304 Stainless Steel Case with 316 Stainless Steel Connection—Dual Scale (psi, kPa)

For Use With: Air, Water, Hydraulic Fluid, Ammonia, Bleach, Boric Acid, Gasoline, Diesel Fuel, and Natural Gas
Accuracy: ±1.6% Full Scale (Not Graded)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kPa	psi	kPa	psi	kPa
2 1/2" Dial Diameter
0 to 15	0 to 100	0.2	2	3	20
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 700	2	10	20	100
0 to 160	0 to 1,100	2	20	20	200
4" Dial Diameter
0 to 15	0 to 100	0.1	2	2	20
0 to 30	0 to 200	0.5	5	5	50
0 to 60	0 to 400	1	10	10	100
0 to 100	0 to 700	2	10	20	100
0 to 160	0 to 1,100	2	20	20	200

						Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Orientation	Guard Material		Each
NPT Female
2 1/2"	1/4	-40° to 140°	0° to 210°	Any	316 Stainless Steel	0000000	0000000
2 1/2"	1/2	-40° to 140°	0° to 210°	Any	316 Stainless Steel	0000000	000000
4"	1/4	-40° to 140°	0° to 210°	Any	316 Stainless Steel	0000000	000000
4"	1/2	-40° to 140°	0° to 210°	Any	316 Stainless Steel	0000000	000000

Painted Steel Case with PVC Plastic Connection—Dual Scale (psi, kg/cm²)

For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kg/cm²	psi	kg/cm²	psi	kg/cm²
0 to 30	0 to 2.1	0.5	0.05	5	0.5
0 to 60	0 to 4.2	1	0.1	10	1
0 to 150	0 to 11.2	2	0.2	20	2

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Guard Material	Guard Color		Each
NPT Female
2"	1/4	40° to 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	000000

Painted Steel Case with CPVC Plastic Connection—Dual Scale (psi, kg/cm²)

For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kg/cm²	psi	kg/cm²	psi	kg/cm²
0 to 30	0 to 2.1	0.5	0.05	5	0.5
0 to 60	0 to 4.2	1	0.1	10	1
0 to 150	0 to 11.2	2	0.2	20	2

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Guard Material	Guard Color		Each
NPT Female
2"	1/4	40° to 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	000000

Gauge Guards

316 Stainless Steel Guard

316 Stainless Steel Guard With Drain Port

Plastic Guard

Also known as isolators or diaphragm seals, these protect gauges from corrosive process media. Fill guards with hydraulic oil (not included) before use.

316 stainless steel guards provide excellent corrosion and chemical resistance and can handle higher temperatures and pressures than plastic guards.

Polypropylene and PVDF guards are more chemical resistant than PVC and CPVC guards.

Guards with drain port allow you to remove process media.

Pipe Connections
Inlet	Outlet	Gasket Material	For Use With	Min. Pressure, psi	Max. Pressure	Max. Temp., °F	Ht.		Each
316 Stainless Steel Body
1/4 NPT Female	1/4 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	1 3/4"	0000000	0000000
1/2 NPT Female	1/4 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	1 3/4"	0000000	000000
1/2 NPT Female	1/2 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	1 1/2"	0000000	000000
316 Stainless Steel Body with 1/4 NPT Female Drain Port
1/4 NPT Female	1/4 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	2"	0000000	000000
1/2 NPT Female	1/4 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	2"	0000000	000000
1/2 NPT Female	1/2 NPT Female	316 Stainless Steel	Acetylene, Air, Ammonia, Argon, Bleach, Boric Acid, Carbon Dioxide, Deionized Water, Diesel Fuel, Ethanol, Ethyl Alcohol, Gasoline, Hydraulic Fluid, Hydraulic Oil, Hydrogen, Liquid Nitrogen, Mineral Oil, Natural Gas, Nitrogen, Oxygen, Refrigerant, Salt Water, Steam, Water	60	2,500 psi @ 72° F	300°	2"	0000000	000000
PVC Plastic Body
1/4 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	140°	2 3/4"	0000000	000000
1/2 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	140°	2 3/4"	0000000	000000
CPVC Plastic Body
1/4 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	190°	2 3/4"	0000000	000000
1/2 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	190°	2 3/4"	0000000	000000
Polypropylene Plastic Body
1/4 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	240°	2 3/4"	0000000	000000
PVDF Plastic Body
1/2 NPT Female	1/4 NPT Female	Fluoroelastomer Rubber	Bleach, Boric Acid, Carbon Dioxide, Hydraulic Fluid, Salt Water, Water	__	150 psi @ 72° F	300°	2 3/4"	0000000	000000

Calibration Columns

Calibrate the flow rate of metering pumps. A graduated scale with zero at the top lets you easily see how much fluid is lost over the course of a one-minute test. This will tell you your pump’s flow rate. Periodic testing helps alert you to issues in your system, such as worn or dirty valves. Checking the flow rate after performing maintenance ensures your pump is working properly.

Install the column between your reservoir and pump. They require shutoff access to your reservoir and an on/off valve (not included) at the point where they connect to your system. To start the test, open the on/off valve as the system is running to fill the column with fluid up to the zero mark. Shut off the valve and wait one minute before observing the liquid level in the column. After you've taken the reading, close the on/off valve to the column and reopen access to the reservoir.

Borosilicate glass calibration columns and their fittings stand up to sulfuric acid, hydrochloric acid, and other corrosive chemicals.

			Volume		Graduations
Pipe Connections	Ht.	Flow Rate Range, gph	gal.	ml	gph	ml/min	Temp. Range, °F	O-Ring Material	Mounting Orientation	For Use With		Each
Borosilicate Glass Body with PTFE Plastic Fittings
Gallons per Hour, Milliliters per Minute
1/2 NPT Female	13"	0 to 1.5	1.5	100	0.02	1	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	0000000
1/2 NPT Female	16 1/2"	0 to 4	4	250	0.05	2	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	000000
3/4 NPT Female	18"	0 to 8	8	500	0.05	5	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	000000
3/4 NPT Female	29"	0 to 16	16	1,000	0.125	5	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	000000
1 NPT Female	24"	0 to 32	32	2,000	0.25	10	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	00000000
1 NPT Female	39"	0 to 64	64	4,000	0.25	20	40° to 150°	Fluoroelastomer Rubber	Vertical	Water, Gasoline, Diesel Fuel, Kerosene, Ammonium Hydroxide, Bleach, Chlorine, Citric Acid, Deionized Water, Ethylene Glycol, Fuel Oil, Hydraulic Oil, Hydrochloric Acid, Isopropyl Alcohol, Methyl Chloride, Motor Oil, Nitric Acid, Paint, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide, Sulfuric Acid	00000000	00000000

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About Pipe Size

About Pressure Gauges

Vibration-Resistant Pressure Gauges for Chemicals

High-Pressure Gauges for Chemicals

Low-Pressure Gauges for Chemicals

Gauge Guards

Calibration Columns