Thermo Orion AQ4000 Colorimeter
Features
- Auto-ID and pre-programmed methods ensure error-free readings at a very affordable price
- Up to 12 data points can be used to define a custom method and a maximum of 10 methods can be stored in the memory
- Never become obsolete because new methods can be easily downloaded
Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | AQ4000 | Orion AQ4000 colorimeter with carrying case | $1,203.42 | Usually ships in 3-5 days |

Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | AQ4CBL | Orion AQUAfast IV RS-232 cable for data download & software updates | $183.21 | Usually ships in 3-5 days | ||
![]() | AQ4ZER | Orion AQUAfast IV zero kit | $56.54 | Usually ships in 3-5 days | ||
![]() | AC2V16 | Orion 16mm replacement glass sample vials, 10 pack | $78.21 | Usually ships in 3-5 days | ||
![]() | AC2V24 | Orion 24mm replacement glass sample vials, 12 pack | $148.80 | Usually ships in 3-5 days | ||
![]() | AC2002 | Orion AQUAfast alkalinity-m (total) tablet reagent kit, 100 tests | $24.46 | Usually ships in 3-5 days | ||
![]() | AC4027 | Orion AQUAfast IV aluminum reagent kit, 30 tests | $69.38 | Usually ships in 3-5 days | ||
![]() | AC2027 | Orion AQUAfast aluminum tablet reagent kit, 50 tests | $42.50 | Usually ships in 3-5 days | ||
![]() | AC4P12 | Orion AQUAfast ammonia-nitrogen powder reagent kit, 100 tests | $171.12 | Usually ships in 3-5 days | ||
![]() | AC4010 | Orion AQUAfast IV ammonia (ultra low range) reagent kit, 30 tests | $39.80 | Usually ships in 3-5 days | ||
![]() | AC4012 | Orion AQUAfast IV ammonia (low range) reagent kit, 30 tests | $56.54 | Usually ships in 3-5 days | ||
![]() | AC4011 | Orion AQUAfast IV ammonia (high range) reagent kit, 30 tests | $55.06 | Usually ships in 3-5 days | ||
![]() | AC2012 | Orion AQUAfast ammonia (2 ranges) tablet reagent kit, 50 tests | $26.60 | Usually ships in 3-5 days | ||
![]() | AC4017 | Orion AQUAfast IV chloride reagent kit, 30 tests | $50.03 | Usually ships in 3-5 days | ||
![]() | AC2017 | Orion AQUAfast chloride tablet reagent kit, 50 tests | $22.41 | Usually ships in 3-5 days | ||
![]() | AC4099 | Orion AQUAfast IV chlorine dioxide reagent kit, 30 tests | $50.41 | Usually ships in 3-5 days | ||
![]() | AC2099 | Orion AQUAfast chlorine dioxide tablet reagent kit, 100 tests | $22.23 | Usually ships in 3-5 days | ||
![]() | AC4P71 | Orion AQUAfast chlorine (free) powder reagent kit, 100 tests | $26.78 | Usually ships in 3-5 days | ||
![]() | AC2071 | Orion AQUAfast chlorine (free) tablet reagent kit, 100 tests | $19.07 | Usually ships in 3-5 days | ||
![]() | AC4070 | Orion AQUAfast IV chlorine (free and total) reagent kit, 30 tests | $47.06 | Usually ships in 3-5 days | ||
![]() | AC2070 | Orion AQUAfast chlorine (free and total) tablet reagent kit, 50 tests | $17.95 | Usually ships in 3-5 days | ||
![]() | AC4P72 | Orion AQUAfast chlorine (total) powder reagent kit, 100 tests | $26.78 | Usually ships in 3-5 days | ||
![]() | AC2072 | Orion AQUAfast chlorine (total) tablet reagent kit, 100 tests | $21.95 | Usually ships in 3-5 days | ||
![]() | AC4P29 | Orion AQUAfast copper bicinchoninate powder reagent kit, 100 tests | $48.36 | Usually ships in 3-5 days | ||
![]() | AC4029 | Orion AQUAfast IV copper (soluble) reagent kit, 30 tests | $51.24 | Usually ships in 3-5 days | ||
![]() | AC2065 | Orion AQUAfast zinc/copper tablet reagent kit, 50 tests | $34.50 | Usually ships in 3-5 days | ||
![]() | AC2029 | Orion AQUAfast copper tablet reagent kit, 50 tests | $41.76 | Usually ships in 3-5 days | ||
![]() | AC4006 | Orion AQUAfast IV cyanide (free) reagent kit, 30 tests | $75.05 | Usually ships in 3-5 days | ||
![]() | AC2009 | Orion AQUAfast fluoride SPADNS liquid reagent kit, 100 tests | $95.79 | Usually ships in 3-5 days | ||
![]() | AC2030 | Orion AQUAfast hydrazine powder reagent kit, 30 tests | $44.27 | Usually ships in 3-5 days | ||
![]() | AC4P79 | Orion AQUAfast iron TPTZ (total) powder reagent kit, 100 tests | $36.74 | Usually ships in 3-5 days | ||
![]() | AC4P78 | Orion AQUAfast iron ferro (total) powder reagent kit, 100 tests | $26.78 | Usually ships in 3-5 days | ||
![]() | AC4078 | Orion AQUAfast IV iron (total and soluble) reagent kit, 30 tests | $51.80 | Usually ships in 3-5 days | ||
![]() | AC2078 | Orion AQUAfast iron (II, III) soluble tablet reagent kit, 100 tests | $33.67 | Usually ships in 3-5 days | ||
![]() | AC4P55 | Orion AQUAfast manganese HR powder reagent kit, 100 tests | $65.94 | Usually ships in 3-5 days | ||
![]() | AC4055 | Orion AQUAfast IV manganese reagent kit, 30 tests | $71.15 | Usually ships in 3-5 days | ||
![]() | AC2055 | Orion AQUAfast manganese tablet reagent kit, 50 tests | $51.80 | Usually ships in 3-5 days | ||
![]() | AC4P42 | Orion AQUAfast molybdenum/molybdate HR powder reagent kit, 100 tests | $111.60 | Usually ships in 3-5 days | ||
![]() | AC4007 | Orion AQUAfast IV nitrate (high range) reagent kit, 30 tests | $88.91 | Usually ships in 3-5 days | ||
![]() | AC4005 | Orion AQUAfast IV nitrate (mid range) reagent kit, 30 tests | $104.16 | Usually ships in 3-5 days | ||
![]() | AC4004 | Orion AQUAfast IV nitrate (low range) reagent kit, 30 tests | $108.81 | Usually ships in 3-5 days | ||
![]() | AC2007 | Orion AQUAfast II nitrate tablet reagent kit, 50 tests | $31.43 | Usually ships in 3-5 days | ||
![]() | AC4P46 | Orion AQUAfast nitrite LR powder reagent kit, 100 tests | $45.29 | Usually ships in 3-5 days | ||
![]() | AC4046 | Orion AQUAfast IV nitrite reagent kit, 30 tests | $49.10 | Usually ships in 3-5 days | ||
![]() | AC2046 | Orion AQUAfast nitrite tablet reagent kit, 100 tests | $32.18 | Usually ships in 3-5 days | ||
![]() | AC4048 | Orion AQUAfast IV ozone reagent kit, 30 tests | $53.66 | Usually ships in 3-5 days | ||
![]() | AC2001 | Orion AQUAfast pH tablet phenol red reagent kit, 100 tests | $23.44 | Usually ships in 3-5 days | ||
![]() | AC4P95 | Orion AQUAfast phosphorus 3 powder reagent kit, 100 tests | $37.94 | Usually ships in 3-5 days | ||
![]() | AC4095 | Orion AQUAfast IV phosphate (low range) reagent kit, 30 tests | $48.73 | Usually ships in 3-5 days | ||
![]() | AC2096 | Orion AQUAfast phosphate HR tablet reagent kit, 50 tests | $30.41 | Usually ships in 3-5 days | ||
![]() | AC2095-WA | Orion AQUAfast phosphate LR tablet reagent kit, 50 tests | $26.78 | Usually ships in 3-5 days | ||
![]() | AC4P60 | Orion AQUAfast silica HR powder reagent kit, 100 tests | $79.42 | Usually ships in 3-5 days | ||
![]() | AC4060 | Orion AQUAfast IV silica reagent kit, 30 tests | $69.10 | Usually ships in 3-5 days | ||
![]() | AC2061 | Orion AQUAfast silica (phosphate removal) tablet reagent kit, 100 tests | $34.50 | Usually ships in 3-5 days | ||
![]() | AC2060 | Orion AQUAfast silica tablet reagent kit, 50 tests | $41.76 | Usually ships in 3-5 days | ||
![]() | AC4P82 | Orion AQUAfast sulfate 4 powder reagent kit, 100 tests | $44.27 | Usually ships in 3-5 days | ||
![]() | AC4082 | Orion AQUAfast IV sulfate reagent kit, 30 tests | $53.57 | Usually ships in 3-5 days | ||
![]() | AC2082 | Orion AQUAfast sulfate tablet reagent kit, 100 tests | $28.27 | Usually ships in 3-5 days | ||
![]() | AC4016 | Orion AQUAfast IV sulfide (soluble) reagent kit, 30 tests | $53.85 | Usually ships in 3-5 days | ||
![]() | AC2016 | Orion AQUAfast sulfide tablet reagent kit, 50 tests | $35.62 | Usually ships in 3-5 days | ||
![]() | AC4065 | Orion AQUAfast IV zinc reagent kit, 30 tests | $51.80 | Usually ships in 3-5 days |


Thermo Orion AQ4000 colorimeter has the Auto-ID feature that automatically identifies the species to be measured, selects the program and initiates the measurement without the user ever having pushed a button! The AQ4000 with its Auto-ID and pre-programmed methods ensure error-free readings at a very affordable price.
This rugged and attractive unit is waterproof to IP67 standards. The AQ4000 is so advanced, a user can customize a calibration and create a completely custom method. Up to 12 data points can be used to define a custom method and a maximum of ten methods can be stored in the colorimeters memory. The simple operation guides a user through the setup and measurement.
Selection of display units is a button press away. Selectable measurement units include concentration, absorbance or percent transmittance. Datalog 100 points in the field with a time and date tag, then download to a printer or computer in the lab. The AQ4000 carries a two-year warranty.
* Reagent kits sold separately
- Wavelength (nm) 420, 520, 580, 610
- Wavelength Accuracy 2 nm
- Wavelength Selection Automatic
- Photometric Linearity 0.002 A (0-1 A)
- Photometric Reproducibility 0.005 A (0-1 A)
- Photometric Accuracy 0.005A @ 1.0 ABS Nominal
- Photometric Range 0 2 A
- Stray Light< 1.0% at 400 nm
- Source Lamp Light Emitting Diode (LED)
- Detector Photodiode
- Bandwidth 10 2 nm
- (1) AQ4000 meter
- (4) AA batteries
- (1) 16mm vial
- (1) 16mm vial adapter
- (1) 13mm vial adapter
- (1) Field case
- (1) User guide with test methods
- (1) Tablet tampering stir rod
- (1) Vial cleaning brush
Yes, the AQ4000 Colorimeter can transfer data via the optional RS232 cable (available under the Accessories tab) and can store up to 100 data points in the memory.
The Thermo Orion AQ4000 colorimeter comes with one 16mm vial, as well as an adaptor for 16mm and 13mm vials. Additional vials in 16mm or 24 mm are available under the Accessories tab.
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