BM-55 Gas Chromatograph

I. Operating Conditions

● Power supply: 220V, 50Hz;

● Ambient temperature: 5–35℃;

● Ambient relative humidity: 5%–95%.

II. Gas Chromatograph Main Unit 

★1. Adopts an advanced 100/1000 Gigabit Ethernet communication interface 

with a built-in IP protocol stack; Communication interface: Ethernet IEEE802.3, 

allowing the instrument to transmit data over long distances via 

the enterprise's internal LAN and the internet; facilitating laboratory setup, 

simplifying laboratory configuration, and convenient management of analytical data.

★2. The instrument can be optionally equipped with a 

"Smart Chromatography Remote Controller," whose 

performance/features include: using the Alibaba APP

 "Cloud Intelligence"

1. Main Features of the Instrument: 

1.1 Utilizing EPC technology for digital control, the automation level and overall performance are close to those of leading international brands. 

1.2 Multiple detectors are available (TCD, FID, ECD, FPD, NPD), with the option to install up to four detectors. 

1.3 Adopts an advanced 10/100M adaptive Ethernet communication interface and built-in IP protocol stack, easily forming a local area network for long-distance transmission, remote control, and remote diagnosis.

2. General Technical Specifications of the Networked Gas Chromatograph

*2.1.1 EPC, EFC operating modes: Pressure, flow rate, programmed pressure, programmed flow rate 

2.1.2 EPC, EFC control accuracy: Pressure 0.001 psi; flow rate 0.01 ml/min 

2.1.3 EPC, EFC working gases: 5 types: nitrogen, air, helium, argon 

2.1.4 EPC, EFC control range: Pressure: 0-0.6 MPa; flow rate 0-100 ml/min or 0-500 ml/min (air) 

*2.1.5 Programmed pressure/flow rate: 4 stages (expandable) 

2.2 Injection System 

Features dual packed column injection ports, dual electronically controlled split/splitless capillary injection ports, and a gas six-way injection valve for flexible configuration. Multiple injectors are available: packed column injector, capillary splitless injector, capillary split/splitless injector, six-way valve gas injection, improving the stability and reliability of the injection and analysis system. The capillary split/splitless injection device allows for time-programmed solvent effect elimination, and provides digital display of carrier gas, split gas, make-up gas, and septum purge gas, with a display accuracy of 0.01 psi.

2.3 Temperature Control System

8-channel high-precision temperature control

2.4.1 Intelligent rear door: infinitely adjustable air intake and exhaust volume 

2.4.2 Temperature control range: room temperature +4℃ to 450℃ 

2.4.3 Temperature control accuracy: ±0.01℃ 

2.4.4 Set temperature increment: 1℃; 

*2.4.5 Programmed temperature ramping: Computer-controlled temperature control expandable to 99-step programmed temperature ramping, heating rate: ≥180℃/min (in 0.1℃ increments), programmed temperature ramping repeatability: not greater than 0.3% 

*2.5 Over-temperature protection, intelligent indication of over-temperature location 2.6 Detectors 

2.6.1 Flame Ionization Detector (FID) Detection limit: ≤5x10-12g/s (n-hexadecane/isooctane) Linear range: >107 Drift: ≤0.1mv/30min 

2.6.2 Flame Photometric Detector (FPD) Sensitivity: Mt<2x10-11g/s (S in thiophene) Mt<1x10-12g/s (P in methyl parathion) Noise: ≤30uv Drift: ≤3% of full scale/30min Linear range: Sulfur >103, Phosphorus >104 2.6.3 Electron Capture Detector (ECD) Detection limit: ≤1x10-14g/s (γ-666) Noise: ≤10uv Drift: ≤15uv/30min Linear range: >106

II. Networked Chromatography Data Processing System 1. Chromatography Data Workstation (Remote Control) 

1.1 Multi-channel synchronous or asynchronous operation 

1.2 Input voltage range: -2.0V ± 0.5V ~ 2.0V ± 0.5V 

1.3 Input impedance: >10MΩ 

1.4 Integration sensitivity: <0.1μV·s 

1.5 Minimum resolution: <0.1μV 

1.6 Dynamic range: 10⁷ 

1.7 Linearity: ±0.1% 

1.8 Repeatability: ±0.1% 

1.9 Sampling period: 20 times/second 

1.10 Sampling time: >25 hours 

1.11 Signal transmission: RS-232 digital signal transmission or network cable transmission, strong anti-interference ability

1.12 The insulation resistance between the serial port and the signal input terminals of channels 1 and 2 is greater than 500MΩ when tested with 1000V high voltage.

2.1 During chromatogram acquisition, the height of the chromatogram display area can be adjusted freely. 

2.2 During chromatogram acquisition, more than two channels of chromatograms can be displayed simultaneously in the same window. Addition and subtraction operations or overlapping display can be performed between multiple chromatograms. It can automatically calculate chromatographic instrument indicators such as baseline noise and drift, theoretical plate number of the chromatographic column, peak resolution, tailing factor, and capacity factor.

3. Spectrum Processing: 

3.1 Number of peaks that can be processed: greater than 1000 

3.2 Features manual integration function, allowing for adding peaks, deleting peaks, merging peaks, and shoulder peak cutting. 

3.3 Allows subtraction of blank sample spectra from the spectrum, and also allows subtraction of baseline drift from the entire spectrum to obtain a completely horizontal baseline. 

3.4 Allows negative peak inversion. 

3.5 Can detect weak peaks that are 2 times the baseline noise. 

3.6 Quantitative calculation methods: normalization method, corrected normalization method, grouping method, internal standard method, multiple internal standard method, external standard method, exponential method.

3.7 Allows subtraction of background concentration calculated from blank samples from the current quantitative result concentration.

III. Configuration Requirements 

1. Gas Chromatograph Main Unit: 1 set 

2. FID Detector: 1 set 

3. Capillary Chromatography Column: 1 piece 

4. Control Workstation: 1 set 

5. Hydrogen Generator: 1 set 

6. Air Generator: 1 set 

7. High-purity Nitrogen Gas with Pressure Reducing Valve: 1 set 

8. Branded Computer: 1 set

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