Eyes to Explore the Unknown World

Name: CADetector a1
Brand: Instrumax

The Charged Aerosol Detector (CAD) is a universal detector with high sensitivity, high reproducibility, and wide linear range. It can detect non-volatile and semi-volatile substances and is suitable for accurate quantitative or semi-quantitative analysis.

Intuitive Touch Display

Domestic First, Patented Technology

Fine Atomization of Mobile Phase

Fine Splitting of Aerosol

CADetector a1 Domestic First, Patented Technology

Charged Aerosol Detection Principle

Atomization

Uses a coaxial two-phase nebulizer; high-speed gas stream impacts the mobile phase; average particle size ≤10 μm

Evaporation

Uses stainless steel evaporation tube; high-precision temperature sensor; temperature control accuracy ±0.01 °C

Charging

Uses tungsten steel alloy corona needle; high-voltage corona technology; corona current accuracy ±0.1 nA

Detection

Uses Faraday cage with gas filtration; captures charged particle charge; charge collection accuracy ±0.5 fA

High Sensitivity

Provides excellent response for compounds down to the pg level

High Reproducibility

Excellent repeatability with RSD below 2% ensures reliable and accurate experimental results

Wide Linear Range

Linear range of 4 orders of magnitude, no need for logarithmic calculations

Broad Applicability

Flexibly handles detection of non-volatile and semi-volatile substances

Better Consistency

CAD detector is a mass-sensitive detector, more accurately reflecting the actual mass of substances compared to other detectors

Advantages of CAD Detector Compared to Other LC Detectors

Type	CAD	ELSD	UVD	RID	MS
Sensitivity	✅		✅	✅	✅
Gradient Compatibility	✅	✅	✅		✅
Baseline Stability	✅	✅	✅		✅
Solvent Interference	✅	✅			✅
Mass Consistency	✅	✅		✅	✅

Pharmaceutical Industry

Plays an important role throughout drug discovery, drug development, pharmacokinetic studies, clinical drug trials, and drug QA/QC

Petrochemical Industry

Application research progress in separation and analysis of raw materials and products in petrochemical production shows broad prospects for scientific instruments in petrochemicals

Food Safety

Increasing quality and safety requirements in the food safety field provide space for serving unmet needs

Chip Industry

The rise of domestic semiconductor companies offers more possibilities for entering this field

Environmental Monitoring

Green development imposes higher requirements on pollution monitoring, tracing, treatment, and control; the number of national environmental monitoring stations/sections continues to increase

New Energy Industry

In the R&D process of new material batteries, qualitative analysis of unknown organic substances is required

CADetector 𝛼1 Specifications

㊟ Instrumax Featured Indicators

Type	Parameter	Type	Parameter
Detection Type	Charged Aerosol Detector / Electrically Charged Aerosol Detection	Gas Inlet Pressure	482 – 551 kPa (4.8 – 5.5 bar, 70 – 80 psi)
Nebulizer	Coaxial Two-Phase	Digital Signal Interface	LAN, RS232
㊟ Noise	≤0.1 mV @ 80% Water : 20% Methanol, flow rate 0.4 mL/min	Analog Signal Range	-0.5 V ~ 2.5 V
Drift	≤0.2 mV/60min @ 80% Water : 20% Methanol, flow rate 0.4 mL/min	Interaction Signals	Input signals (Run, Stop, Auto Zero), Output signal (Alarm Output)
㊟ Calibration Relationship	Correlation coefficient >0.99 @ Caffeine 0.01 mg/mL - 1 mg/mL concentration reference solution, 80% Water : 20% Methanol, flow rate 0.4 mL/min	Tubing Material	SS316L, PTFE
Repeatability	≤2% @ Caffeine 125 μg/mL aqueous solution, 80% Water : 20% Methanol, flow rate 0.4 mL/min	Protection Functions	Vapor monitoring, pressure monitoring, flow monitoring, leak monitoring, temperature monitoring, voltage monitoring, liquid path switching protection valve
㊟ Signal-to-Noise Ratio	≥10 @ Caffeine 5.0 μg/mL aqueous solution, 80% Water : 20% Methanol, flow rate 0.4 mL/min	Display	8.8 inch RGB (Resolution: 1280 x 480)
Corona Current Adjustable Range	0.5 ~ 1.5 μA	㊟ Touch Screen	Corrosion-resistant glass capacitive touch
㊟ Liquid Inlet Flow Rate	0.01 mL/min ~ 2.0 mL/min	㊟ Screen Lock Mode	0 ~ 10 minutes
㊟ Drift Tube Temperature	Room temperature +5 °C ~ 110 °C	㊟ Working Status Light	Multi-color indicator breathing light
㊟ Mixing Chamber Temperature	Room temperature +5 °C ~ 60 °C	㊟ Usage Range	Indoor use only
Temperature Control Accuracy	<±0.01 °C	㊟ Operating Environment Temperature	-20 °C ~ 50 °C
Data Acquisition Frequency	2.0 Hz ~ 200 Hz	Operating Environment Humidity	20% – 80%
Filter Range	0.0 ~ 9.0	㊟ Operating Altitude	Within 3000 m above sea level
Dynamic Range	>4 orders of magnitude	Waste Liquid Recovery Method	Active recovery
㊟ HDR Mode	Response Factor	㊟ Exhaust Gas Emission Method	Atmospheric emission
Gas Flow Control	Dual gas mass flow controllers	㊟ Pollution Level	II
Gas Flow Control Range	0.00 ~ 5.00 L/min adjustable, typical gas consumption ≤4 L	㊟ Power Supply Requirements	100 VAC ~ 240 VAC, 50 Hz ~ 60 Hz, 150 W
Gas Source Type	Nitrogen or compressed air	Noise Level	<30 dB
Gas Inlet Pressure Control	Electronic pressure control	Dimensions (H x W x D)	43 cm x 36 cm x 50 cm
Weight	12 KG	LC Compatibility	Compatible with mainstream brand LC systems, supports digital communication, no need for digital-to-analog conversion
Normal Phase Compatibility	Compatible	Number of Channels	Supports up to 6 independent power value channels