YSI EcoSense 9300 Photometer and 9500 Photometer

The YSI 9300 and YSI 9500 are economical photometers in small packages for any application. These portable photometers allow you to easily take readings directly in the field for 100+ parameters.

YSI 9500 Photometer Field Application Measuring Parameters in a Fish Pond

Find a Distributor

YSI has Authorized Distributors all over the globe. View a map and find your closest contact for YSI 9300 / 9500 Photometer products and accessories.

Get Support

Have a question about your YSI 9300 / 9500 Photometer? Check out the support page with resources compiled just for you.

Product Service Centers

Want to return a product for service? Here you'll find authorized service centers and instructions on how to send in your YSI 9300 / 9500 Photometer.

Selecting the desired test has never been easier. Simply choose among the list of available tests on the large graphic display and the instrument will walk you through the test procedure - it's that easy! Simple. Convenient. Accurate.

Features for the 9300 include:

Direct reading concentrations
Waterproof IP-67 rating
Large, backlit graphic display
Sample tube holder automatically adjusts for various diameters
On-screen instructions virtually eliminates reading manuals
Multiple languages (English, French, German, Spanish, Italian)
100+ test choices

The 9500 features all of the above, as well as:

Waterproof USB connection that can also power the instrument
Internal memory for 500 sample sets
User-selectable options for test units, sample numbers, dilutions factors, or additional tests

You can rely on the accuracy and reliability of YSI's 9300 and 9500 photometers. Just choose the reagents for the parameters of interest and start getting results today.

The 9500 includes hard-sided carrying case with foam cutouts for the instrument, accessories, reagents, and more along with a waterproof USB cable.

The 9300 includes hard-sided carrying case with foam cutouts for the instrument, accessories, reagents, and more

Related Products
EcoSense	pH10A	ORP15A	DO200A

EC30A	EC300A	pH100A

Two versions are available:

The 9300 with	and the 9500 with
Hard sided carrying case 8 sample tubes 1 dilution tube 10 crush rods 1 cleaning brush 1 light cap Instruction manual	Hard sided carrying case 8 sample tubes 1 dilution tube 10 crush rods 1 cleaning brush 1 light cap Instruction manual USB cable

YSI 9300 and YSI 9500 Instrument General Specifications

Accuracy		±0.5% at 4% transmittance; ±0.005 at 0.3 AU
Dimensions	Size	146 width x 275 length x 75 mm height (5.8 x 10.8 x 3 inches)
	Weight	975 g (2 lbs)
Display		Graphic, backlit LCD with on-screen instructions
Resolution		0.001 AU
Operating Wavelengths		450, 500, 550, 570, 600 and 650 nm
Power		3x AA batteries; the 9500 can also be powered via USB
Test Cells		Automatic adjustment from 12-20 mm diameter
Warranty		1-year instrument

YSI Photometer Test Kits

Test Kit	Range	Starter Pack (50 tests) Item Number	Replacement Packs (250 tests) Item Number
Alkalinity, Total (Alkaphot)	0-500 (CaCO₃)	YPM188	YAP188
Alkalinity-M (Alkaphot M)	0-500 (CaCO₃)	YPM250	YAP250
Alkalinity-P (Alkaphot P)	0-500 (CaCO₃)	YPM251	YAP251
Aluminum	0-0.5	YPM166	YAP166
Ammonia	0-1.0 (N)	YPM152	YAP152
Bromine	0-10.0	YPM060	YAP060
Calcium Hardness (Calcicol)	0-500 (CaCO₃)	YPM252	YAP252
Chloride (Chloridol)	0-50,000 (NaCl)	YPM268	YAP268
Chlorine DPD 1 (Free Chlorine)	0-5.0	YPM011	YAP011
Chlorine DPD 2 (Monochloramine and Dichloramine - requires YPM031)	0-5.0	YPM021	YAP021
Chlorine DPD 1&3 (Free, Combined and Total Chlorine)	0-5.0	YPM031	YAP031
Chlorine DPD 4 (Total Chlorine)	0-5.0	YPM041	YAP041
Chlorine HR (High Range)	0-250	YPM162	YAP162
Chlorine Dioxide (DPD)	0-4.0	YPM052	YAP052
Chlorine Dioxide LR (Low Range)	0-2.5	YPM064	YAP064
Chlorine Dioxide HR (High Range)	2.5-20	YPM065	YAP065
Chromium VI (Hexavalent)	0-1.0	YPM281	YAP281
Copper (Coppercol) (free,combined, total)	0-5.0	YPM186	YAP186
Copper (free)	0.03-5.0	N/A	YAP187
Color (includes turbidity)	10-500	YPM269	N/A
Cyanuric Acid	0-200	YPM087	YAP087
Dissolved Oxygen (0.0-0.8 vials)	0.02-0.08	YPL553	N/A
Dissolved Oxygen (0.0-2.0 vials)	0.05-2.0	YPL503	N/A
Fluoride	0-1.5	YPM179	YAP179
Hardness (Hardicol)	0-500 (CaCO₃)	YPM254	YAP254
Hydrazine	0-0.5	YPM103*	YAP103
Hydrogen Peroxide LR	0-2	YPM104	YAP104
Hydrogen Peroxide HR	0-100	YPM105	YAP105
Iron LR	0-1.0	YPM155	YAP155
Iron MR	0-5.0	YPM292	YAP292
Iron HR	0-10	YPM156	YAP156
Magnesium (Magnecol)	0-100	YPM193	YAP193
Manganese	0-0.03	YPM173	YAP173
Molybdate LR	0-20	YPM258	YAP258
Molybdate HR	0-100	YPM175	YAP175
Nickel	0-10	YPM284	YAP284
Nitrate	0-20 (N)	YPM163	YAP163
Nitrite (N)	0-0.5 (N)	YPM109	YAP109
Nitrite (NaNo₂)	0-1500 (NaNo₂)	YPM260	YAP260
Organophosphonate (OP)	0-20 (PO₄)	YPM262	YAP262
Ozone	0-2.0	YPM056	YAP056
pH (phenol red)	6.8-8.4	YPM130	YAP130
PHMB	2-100	YPM272	YAP272
Phenol	0-5.0	YPM287	YAP287
Phosphate LR	0-4.0	YPM177	YAP177
Phosphate HR	0-100	YPM114	YAP114
Potassium	0-12	YPM189	YAP189
Silica	0-4.0	YPM181	YAP181
Silica HR	0.02-4.0	YPM290	YAP290
Sulphate	0-200	YPM154	YAP154
Sulphide	0-0.5	YPM168	YAP168
Sulphite	0-500 (Na₂SO₃)	YPM266	YAP266
Zinc	0-4.0	YPM148	YAP148
* Includes 30 tests

Ordering Guide

Item #	Part Number	Description
9300	YPT9300	9300 photometer**
9500	YPT9500	9500 photometer***
285	YPT285	Hard-sided carrying case for the 9300
286	YPT286	Hard-sided carrying case for the 9500
804	YPT804	Color Standard Kit
283	YPT283	USB Power Supply for 9500
284	YPT284	USB Waterproof Cable for 9500
Includes YPT285 (hard-sided carrying case) * Includes YPT286 and YPT284 (hard sided carrying case and USB waterproof cable)

		Photometer Reagent Replacement Packs Reagent replacement packs for the 9300 and 9500 photometers. Packs include reagents for 250 tests per pack unless noted differently.

		Photometer Reagent Starter Kits Reagent starter kits for the 9300 and 9500 photometers. Kits include reagents for 50 tests and instructions.

		YSI YPT283 AC to USB Power Supply The AC power supply for the 9500 photometer.

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YSI YPT283 AC to USB Power Supply