9800 Photometer

Portable, multi-parameter photometer for water quality testing in the field and laboratory.

As the latest addition to YSI’s best-in-class platform of portable instrumentation, the YSI 9800 provides direct measurements for over 30 water quality tests in any application. Utilizing accurate and proven photometric test methodologies with an ergonomically improved, modern, sleek user interface, the YSI 9800 makes water quality testing convenient, quick, and easy for all customers.

The YSI 9800 directly replaces the YSI 9300 and YSI 9500 photometers. The YSI 9300 and YSI 9500 have been discontinued.

Note: Reagents are sold separately.

The YSI 9800 is a portable, multiparameter photometer for quickly and accurately measuring over 30 water quality parameters. For use in the field or lab and featuring a large touchscreen display and an intuitive user interface with onscreen instructions, the 9800 Photometer is the ideal instrument for users of any level of experience operating in any environment!

Rugged and Modern
Waterproof IP-67 rating even when using a USB connection to power the instrument
Impact tested
Abrasion-resistant and chemical-resistant coating
Large, full-color touchscreen display works even with wet or gloved hands
Onscreen step-by-step test instructions
Comfrotable, ergonomic design

Smart, Versatile
Choose from 30+ tests or define your own
Multiple languages, including English, French, Spanish, and Mandarin
User-selectable options for test units, sample numbers, and dilution factors
Automatically stores all test results, data IDs, and user information for data compliance and traceability
Simple Data Management via USB connectivity also powers the instrument
User-upgradeable software via USB connection to PC
1,000 Data Set Memory

Fully serviceable and repairable over the life of the instrument
Carrying case composed of 100% recycled materials
Longer-lasting battery life (up to 5,000 tests per set)


Each YSI 9800 Photometer Kit includes the following: YSI 9800 photometer, a dilution tube, a syringe (luer slip, 10 mL), a polishing cloth, an absorbent cloth, a test tube brush, a USB Type A to C cable, stir rods (qty. 10), test tubes (qty. 10), a reagent box, and a quick start guide.

Ordering Information




Feature  Specifications
Instrument Type Multiparameter Photometer
Wavelengths 430 nm, 465 nm, 530 nm, 575 nm, 620 nm
Accuracy ± 1%T (transmission)
Display Large, Color LCD
User Interface Touch screen with walkthrough text instructions
Width: 211 mm (8.3 in)
Length: 195 mm (7.7 in)
Height: 52 mm (2.0 in)
Weight 0.85 kg (1.87 lbs)
IP Rating IP-67
Power Supply 6x AA Batteries or through USB
Connectivity Connect to PC via USB cable
Memory Capacity 1,000 data sets
Battery Life 5,000 tests on one set of batteries
Languages English, French, Spanish, and Chinese (Simplified)
Certifications EN61326, EN61010, IP67, and EN60068-2-78
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