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 Discount Instrument is an online distributor for a range of professional instruments. We offer internet-leading prices made possible through the online nature of our ecommerce distribution method. We provide excellent customer services and competitive prices.
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Items are dispatched by Registered Air Mail from Hong Kong within 2 business days after we have received your cleared payment. Delivery is approximately 8-18 days, in most cases, it takes 7-10 days. We make sure that your ordered item(s) leaves our facility in a timely manner. Insurance is included in the Shipping & Handling costs you paid and charge the same shipping cost to customers worldwide (same shipping cost to United States, Europe and Australia).
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3 in 1 pH / EC / Temperature Meter ATC Waterproof Water Quality Combo Tester
 
Buy It Now or Best Offer
$34.90
Free shipping
Time left:26d 6h 40m
Automotive Electronic Mechanic Stethoscope Noise Diagnosis 100Hz~10kHz Frequency
 
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$71.01
Free shipping
Time left:14d 11h 15m
Digital Monitor Ph Water Tester Quality Analysis Chlorine Swimming Pool Test Kit
 
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$29.87
Free shipping
Time left:4d 13h 37m
Digital Monitor Ph Water Tester Quality Analysis Chlorine Swimming Pool Test Kit
 
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$31.90
Free shipping
Time left:4d 13h 31m
3-in-1 Honey Refractometer 58~90% Brix/ 38-43 Be' Baume Water ATC Sugar Content
 
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$20.08
Free shipping
Time left:14d 12h 49m
Automotive Short Open Finder Cable Circuit Car Wire Tracker Repair Tester Tool
 
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$29.87
Free shipping
Time left:37d 7h 22m
Gemology Gemstone Polarizing Filter Gem Refractometer 1.81 RI Oil built-in LED
 
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$95.90
Free shipping
Time left:32d 11h 8m
Digital Mini Triple Axis 2000Hz EMF ELF Magnetic Field Radiation Meter 2000mG
 
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$173.90
Free shipping
Time left:34d 11h 53m
Electronic Diamond & Moissanite Identifier Device Tester Analyzer Selection Tool
 
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$101.90
Free shipping
Time left:25d 11h 57m
Portable Spectroscope Gemstone Identification Small Diffraction Gem Gemological
 
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$29.87
Free shipping
Time left:27d 13h 13m
3M Cable Waterproof Inspection Camera Borescope Endoscope Car Engine Pipe Repair
 
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$92.90
Free shipping
Time left:18d 5h 32m
Automotive Electronic Stethoscope Noise Diagnosis Engine Mechanics Finder Tool
 
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20% Off
$63.12
$78.90
Free shipping
Time left:12d 7h 41m
Cable Tester Network Scanner Phone Wire Tracker STP/UTP LAN RJ45 RJ11 BNC 5E 6E
 
Buy It Now or Best Offer
$64.90
Free shipping
Time left:11d 6h 34m
Electronic Digital Automotive Battery Tester Vehicular Voltage Indicator Tester
 
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10% Off
$27.81
$30.90
Free shipping
Time left:23d 6h 36m
Dark Field 10x Loupe Gem Gemstone Darkfield Jewelers Magnifier Testing Tool
 
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$26.12
Free shipping
Time left:29d 12h 38m
Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control
 
Buy it now
$113.90
Free shipping
Time left:25d 12h 36m
LCD Industrial  Video Borescope Endoscope Tube Inspection Camera IP67 Generic
 
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20% Off
$68.72
$85.90
Free shipping
Time left:3d 11h 18m
pH Temperature Meter Dual Display w/ Backlight Continuous Monitor Aquariums Spa
 
Buy it now
$35.78
Free shipping
Time left:10d 12h 57m
pH Temperature Meter Dual Display w/ Backlight Continuous Monitor Aquariums Spa
 
Buy it now
$38.90
Free shipping
Time left:10d 12h 57m
Dark Field 10x Loupe Gem Gemstone Darkfield Jewelers Magnifier Testing Tool
 
Buy It Now or Best Offer
$27.90
Free shipping
Time left:18d 10h 44m
Electronic Circuit Breaker Finder Receiver Transmitter Fuse Locator Socket 110V
 
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$40.90
Free shipping
Time left:12d 8h 46m
Portable Optical Glass Polariscope Gems Gemstone Jeweler Tool w/ LED Flashlight
 
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$31.12
Free shipping
Time left:29d 12h 59m
Online PH & EC Conductivity Monitor Tester Rechargeable Aquaculture Hydroponics
 
Buy it now
$58.90
Free shipping
Time left:22d 12h 6m
pH Monitor Meter ATC 0~14pH w/ Power Adaptor 1.5M Long Electrode Probe Spa Tank
 
Buy it now
$27.39
Free shipping
Time left:17d 11h 38m
Automotive Short Open Finder Cable Circuit Car Wire Tracker Repair Tester Tool
 
Buy It Now or Best Offer
$31.90
Free shipping
Time left:37d 7h 22m
Professional Calcite Dichroscope Trichoic Gemstones Gemological 15mm Diameter
 
Buy It Now or Best Offer
$32.90
Free shipping
Time left:10d 6h 30m
Digital Monitor Ph Wasser Prüfer Qualität Analyse Chlor Schwimmbad Prüfung Kit
 
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$30.19
Free shipping
Time left:34d 11h 54m
0~32% Portable Brix Wort SG Refractometer for Sugar Wine Beer Fruit CNC Coolants
 
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$23.90
Free shipping
Time left:5d 6h 27m
Digital Eloctrosmog Power EMF RF Field Strength Radiation Meter 3-Axis Generic
 
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$118.90
Free shipping
Time left:32d 11h 9m
Car Auto Brake Fluid Tester Detector Automotive Diagnostic Tool Oil Quality
 
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20% Off
$22.32
$27.90
Free shipping
Time left:23d 7h 56m
Automotive Fuel Injector Pump Tester 4 Pulse Modes Vehicle Diagnostic Tool 12V
 
Buy It Now or Best Offer
$35.78
Free shipping
Time left:14d 14h 29m
ORP Redox Electrode 1999mV Replacement Probe for Tester Meter Monitor Controller
 
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$25.86
Free shipping
Time left:10d 12h 7m
Professional Calcite Dichroscope Trichoic Gemstones Gemological 15mm Diameter
 
Buy It Now or Best Offer
$32.37
Free shipping
Time left:32d 11h 11m
Cable Tester Network Scanner Phone Wire Tracker STP/UTP LAN RJ45 RJ11 BNC 5E 6E
 
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$61.11
Free shipping
Time left:32d 11h 8m
Clinical Refractometer Blood Serum Protein Urine SG RI ATC Veterinary & Human
 
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$19.89
Free shipping
Time left:20d 13h 30m
Ultrasonic Leak Detector & Transmitter Air Water Dust Leak Pressure Vacuum 40kHz
 
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$55.90
Free shipping
Time left:32d 11h 13m
Ozone Generator Aquarium Water Purifier Ozonizer Corona Discharge Air Pump 110V
 
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$58.90
Free shipping
Time left:32d 11h 5m
HD Inspection Camera 5M Cable Endoscope Borescope Video 4.3" LCD w/ 1W CREE LED
 
Buy It Now or Best Offer
$187.90
Free shipping
Time left:17d 5h 49m
Digital Network Cable Tester LAN RJ45 5E, 6E Coaxial Wire Checker Length Measure
 
Buy It Now or Best Offer
$78.90
Free shipping
Time left:11d 9h 49m
Digital Handheld CO2 Meter Air Quality Temperature Humidity Dew Point Wet Bulb
 
Buy It Now or Best Offer
$183.84
Free shipping
Time left:34d 11h 54m
 Wine Alcohol Refractometer ATC Dual Scale Measure Meter 0-25% Brix 0-40% VOL
 
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20% Off
$19.92
$24.90
Free shipping
Time left:16d 7h 41m
Electronic Digital Protractor V-Groove Base Machine Automotive Tool w/ Magnets
 
Buy It Now or Best Offer
$49.90
Free shipping
Time left:32d 11h 13m
Nutrient Wand Tester Conductivity Waterproof EC CF ppm Stick Meter Hydroponics
 
Buy It Now or Best Offer
$37.90
Free shipping
Time left:2d 6h 25m
Chelsea / Jadelite Filter Gem Emerald Loupe Green Blue Red Gemstone Identifier
 
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$22.81
Free shipping
Time left:30d 6h 47m
Salinity Brix Refractometer with ATC 0~32% Brix & 0~28% NaCl Salt Brine Food
 
Buy It Now or Best Offer
20% Off
$20.72
$25.90
Free shipping
Time left:3d 12h 39m
0 ~14.00 pH Meter Digital Water Quality Monitor Tester Hydroponic Aquarium Spa
 
Buy It Now or Best Offer
$22.81
Free shipping
Time left:18d 10h 8m
Salinity Temperature Tester High Accuracy Meter 0~70ppt NaCL °C / °F ATC IP65
 
Buy It Now or Best Offer
$31.20
Free shipping
Time left:17d 7h 24m
pH Meter Controller BNC Replaceable Electrode Water Quality Tester Aquarium Tank
 
Buy it now
$109.50
Free shipping
Time left:17d 10h 15m
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