History of Varian Gas Chromatographs

By: Randall Bramston-Cook
Lotus Consulting
5781 Campo WalkLong Beach, California 90803
310/569-0128
email – ebramstoncook@msn.com

andHerb Neumann
Varian, Inc.
2700 Mitchell Drive
Walnut Creek, Ca 94598
800/926-3000

February 11, 2006
Copyright Lotus Flower, Inc. 2006

Have you ever wondered where the number 3800 in Varian 3800 Gas Chromatograph comesfrom? The Varian 3800 is based on the developments of over 81 distinct gas chromatograph models
produced by Varian, Inc., and its predecessors Varian Associates and Wilkens Instruments. The
Varian 3800 is the latest in a sequence of 3300, 3400, 3500, 3600, and 3700 Chromatographs, andhas a significant heritage from the Varian Models 1800 and 2800.
It all started with efforts by Keene Dimick, a USDA chemist in Albany, California, to capture theessence of strawberries by constructing a new fangled analytical tool inspired by the 1955 Nobel Prize
recipients Archer Martin and Richard Synge. After Dimick published his novel treatises is 19561,2, theworld came knocking to duplicate his efforts. With so much clamor, Dimick saw a business opportunity
and, to avoid governmental restrictions, set up his brother-in-law, Ken Wilkins, to manufacture the newdevices. The first was the Model A90, introducing the brand of Aerograph. As technology rapidly
expanded in the 1960s and 1970s3, and even through the 1980s and 1990s, Wilkins Instruments andVarian both made significant changes in the instrument design and introduced multiple instruments
reflecting the enhancements with solid-state electronics, microelectronics, microprocessors, newdetector technologies, and new column advancements. The culmination of that effort is evident in theperformance, flexibility and adaptability of the Varian Model 3800. This history goes something like
this:

ANALYTICAL GC VERSIONS
These instruments were typically set up for single dedicated applications and were designed forsimple operations and ruggedness. Often they were implemented into smaller chassis, but could
frequently match the performance of their “research” cousins.

1957 – A-90-C– 4-filament TCD– oven temperature: ambient to
300 oC– heated stainless steel injector
block– TCD cell volume: 150 µl– filaments - tungsten

A-90-C

1957 – A-100-C– same as A-90-C, but with built-in Varian A-115 5” recorder with two chart speeds
1A-100-C

Dimick, K. P., and Makower, Benjamin, “Volatile Flavor of Starwberry Essence,” Food Technol., 10, 73 (1956).

2

Dimick, K. P., and Corse, J., “Gas Chromatography, A New Method for the Separation and Identification of Volatile
Materials in Foods,” Food Technol., 10, 360 (1956).
3

Varian Associates purchased Wilkins Instruments in 1966.

1957 – A-110-C– same as A-90-C, but with built-in
A-120 Brown-Honeywell 11” recorder,
with four chart speeds

1961 – A-90P– TCD Only
– dial thermometer– built-in 12VDC transistorized power supply– manual column temperature programmer– separate heaters for column oven, detector, andinjector– air circulating fan in column oven– built-in 12 VDC transistorized power supply

A-110-C

A-90P

1961 – A350B Dual-Column System– balance column bleed– linear temperature programmable column oven 9 rates– TCD only
– differential flow controllers

A-350-B

1961 – A-600 - HyFI4– A90P modified to accept FID– new cabinet– column and detector in same oven –– new selected thermally stable vacuum tube power
supply for long term trouble-free operation– isothermal; manual programming at non-linear rates– column temperature range: ambient to +400 oC– separate H2 and air connections forflame ionization detector– dial thermometer– detectors: flame ionization, electron capture (tritium),cross-section, phosphorus

A-600-HyFI

1962 – A-90-P2– pyrometer readout for injector, column, detector andcollector temperatures– manual column temperature programmer– air circulating fan in column oven– separate temperature settings for injector and detector– built-in 12 VDC transistorized power supply

A-90-P2

1962 – A-600-B HyFI

A-600-B-HyFI
4– similar to A-600– gold-plated FID flame head– interchangeable FID or electron capture detectors– rapid heating, low mass column oven

Wilkins Instruments used the acronym “HyFI” for early Hydrogen Flame Ionization gas chromatographs.

1962 – Autoprep 700– based on A-90-P2– TCD only
– fully automatic preparative scale– injection size – 0.1 ml to 2 ml
– automatic column temperature programmer– motorized 8-bottle automatic collector– automatic injector– waste position

Autoprep 700

1963 – 660 - HyFI2 - Moduline– interchangeable functional components– field upgradeable modules– separate detector oven, heats to 400 oC– stainless steel column oven, heats 40 oC/min– dual channel FID/ECD with effluent splitter– dual channel electrometer– manual or linear temperature programmer– cross-section detector– air-cooledelectronic cabinet

660 HyFI Moduline

1963– A-600-C HyFI
– similar to A-600-B– electrometer with feedback circuit– measure down to 10-12 amperes– improved attenuation controls

A-600-C HyFI

1964 – A-600-D - HyFI
– similar to A-600-C– electrometer sensitivity to 3 X 10 -12 amps/mv

1964 – 90P3
– compact single-column instrument– check valve in carrier to prevent sample flash-back– column oven - 6,390 cm3– expanded stainless steel column oven– column oven to 400 oC– cooling rate 300 oC to 100 oC in 8 minutes– temperature monitor – thermocouple pyrometerwith parallax correction– adjustable column oven limit– thermal conductivity detector only
– four-filament tungsten, constant current– isothermal column oven– differential flow controller with needle valve– four tungsten/rhenium TCD filaments– constant TCD filament current

90P3

1964 – 705 AutoPrep– FID– fully automatic preparative GC– post-column variable splitter to collect mostof the sample but divert a small amountto the FID– low cost nitrogen, instead of helium carrier

Autoprep 705

1964 – Autoprep 711– large scale preparative and analytical GC with FID– column oven - 33,300 cm3– column oven - proportionally controlled isothermallyor linear temperature programmable at 0.5 oC/min to 20 oC/min– post column splitter

1964 – Option 328– temperature controller with platinum probe– isothermal or temperature programming– oven control to 0.2 oC– adaptable to any HyFI column oven

Option 328 with 600 HyFI

1965 – 680 Pestilyzer– specifically designed for analysis ofchlorinated pesticide and herbicide residues– all glass column system– removable Pyrex injector insert– single channel electrometer– built-in 2” chart recorder with pressure-sensitive paper– concentric tube electron capture detector– feedback stabilized electrometer– thermostatic cast aluminum oven– plug-in jack for external recorder

680 Pestilyzer

1965 – Autoprep 712– automatic pneumatic injector - 0.1
ml to 5 ml
– automatic repetitive injection andcollection of samples– full proportional oven temperature
control– FID with built-in splitter– 15-position automatic collector– four-unit timer module

Autoprep 712

1965 – 900 Simulated Distillation– completely self-contained– linear column temperature programmer– low mass column heater assembly– flame ionization detector and electrometer– integrator, printer and recorder included– column oven to -60 oC with LCO2

1966 – Autoprep 713– automatic time pressure injector and control module forreproducible injections of wide volume ranges– sample capacity - 500 ml– injection volume - 0.1 to 30 ml– sample preheater for viscous samples

900

Autprep 713

1966 – 715 Autoprep Mark II– similar to 713– baseline drift corrector– refrigeration unit and dewar to -60 oC– dewar elevator– hydrogen and air generator included– wheeled cart

715 Autoprep Mark II

1966 – 1200 – HyFI3– low-cost, compact size, and versatile– single channel FID or ECD– whole new cabinet– all transistor electronics– solid-state operational amplifiers– isolation of critical high impedance input
circuits– separate injector and detector ovens– linear temperature programmable column oven– column oven – 7,964 cm3– cooling rate from 400 oC to 100 oC in 5 minutes– universal base for ionization detectors

1966 – 1210
– electron capture version

1966 – 1220
– specifically designed for capillary– independently heated capillary injector splitter– linear reproducible splitter– make-up gas plumbing– reproducible retention times with programming– FID

1200 – HyFI III

1967 – 1400
– FID or ECD only
– single column– column oven – 6,614 cm3– column temperature range - ambient to +400C– injectors - on-column or flash vaporization– column cooling from 400 oC to 40 oC in 6 minutes– thermocouple pyrometer– linear temperature programming or isothermal– automatic cooldown and reset to initial temperature– electrometer completely solid-state with JFET input
for minimum drift and unsurpassed reliability– 220 volts only, even in US

1967 – 1420
– TCD
– dual column– all thermal zones thermally isolated with individual
temperature controls– differential flow controllers for constant flow
through both flow systems

1420

1968 – 1440
– 120 volt version for US– single column– universal detector base– column oven - 6,614cm3

1968 – 1450 – ECD H3
1968 – 1475 – ECD Ni 63
1968 – 1485 – Alkali FID
1968 – 2440
– dual channel FID– dual heated injector ports– linear temperature programmer– dual/differential electrometer

1440

1974 – 920–TCD Only– compact multipurpose instrument– column oven - 5,390 cm3– solid-state isothermal proportional controller
for column oven
– thermal conductivity detector only
– solid-state detector electronics– individual proportional controls for injector, detector
and column ovens– differential flow controller and fine metering valve
for carrier– fine metering valves for reference flow

920

1974 - 940– FID Only
– compact multipurpose instrument– 5390 cm3 column oven– solid-state isothermal proportional controller
for column oven
– flame ionization detector only
– solid-state electrometer, ranges 10-11, 10-10, 10-9amp/mv– individual proportional controls for injector, detector
and column ovens– fine metering valves for carrier, hydrogen and air940

1984 – 3400
– microprocessor controlled– inboard data handling (IBDH) and printer– AutoSamplerTM control through keyboard– column oven: -99 oC to 400 oC– column oven - 10,100 cm3– 4 step column temperature programmer– two detectors and electrometers– two injector spaces– subambient temperature programmable capillary injector– on-column packed, flash packed and split/splitless capillary– universal ionization detector base
– FID, TCD, ECD, TSD, FPD, PID, ELCD, and Saturn MS detectors– heated pneumatics compartment– 4 external events– 4 heated zones

3400 (shown with
8100 AutoSampler)1985 – 3300
– low cost version of 3400
– single method– no IBDH– no AutoSamplerTM control– 1 external event

1988 - 3410
– high temperature version of 3400
– column and detector temperatures: -99 oC to 420 oC

1995 – 3350
– single channel only version of 3400

1998 – 3380
– dual channel version of 3800
– manual pneumatics for injector– manual detector flow controllers– column oven - 15,568 cm3– seven external events– 5 heated zones

1999 – 3900
– FID/TCD only
– detector electronic flow controllers– split/splitless capillary injector only
– column oven - 5,637 cm3– electronic flow control for injector– AutoSamplerTM control through keyboard

3900

3380

Family Tree for Varian Gas Chromatographs
Analytical

Research
Moduline Series(1957)

A-90-C
A-100-C(1957)

A-110-C(1957)

202(1963)

204(1963)

1520(1963)

1521(1963)

1522(1963)(1961)A-90P

700 Autoprep(1962)

705 Autoprep(1964)

711 Autoprep(1964)

712 Autoprep(1965)

713 Autoprep(1966)

715 Autoprep(1966)

A350B(1961)

A-600 HyFI

(1961)(1963)

205 Pestilyzer
Moduline B
202-1B(1965)

204-1B(1965)

1520B(1965)

1525B Preparative(1965)

1532 Trace Gas(1965)

202-B Nat Gas(1967)

2100(1966)

Moduline C
90P2
A-600-B HyFI

(1962)(1962)

660 HyFI(1963)

A-600-C HyFI

(1963)

A-600-D HyFI
90P3

(1964)(1964)

680 Pestilyzer(1965)

900 Sim Dis(1965)

202-1C(1967)

204-1C(1967)

1520C(1967)

1525C Preparative(1968)

1532C Trace Gas(1968)

202-C Nat Gas(1968)

Moduline D
1720(1968)

1740(1968)

1800(1968)

1828 Prep(1970)

1848 Prep(1970)

1868 Prep(1970)

1732 Trace Gas(1968)

1200 HyFI3

Moduline E(1966)
1210(1966)

2720(1970)

1220(1966)

2740(1970)

2800(1970)

1400 Series
1400(1967)

2828 Prep(1970)

1420(1967)

2848 Prep(1970)

1440(1968)

2868 Prep(1970)

2440(1968)

1450(1968)

1475(1968)

3700 Series
3720(1975)

3740(1975)

3760(1975)

3711(1976)(1968)

1485
900 Series

Vista Series
920(1974)

940(1974)

Vista 444600

3000 Series
3400(1984)

3300(1985)

3410(1988)

3350(1995)

3380(1998)

3900(1999)(1978)(1978)(1979)

6000
6500
Vista 64
3500

(1986)

3600(1986)

3800(1997)(1980)(1979)RESEARCH GC VERSIONS
These systems are set for the maximum performance available and readily adaptable in the field
for new applications or hardware. Construction is generally modular for easy field-upgrading. Injectors
and detectors are frequently interchangeable due to universal bases and ovens.

1963 – 202 – Moduline– TCD version– two on-column or flash vaporized injectors– dual columns– linear column temperature programmer– rapid cool-down from 400 oC to 100 oC in 4 minutes– dual/differential flow controllers
with two independent needle valves– column oven: ∼9,000 cm3– fan for electronics cabinet cooling– on-column or flash vaporization packed injectors– separately heated detector oven– adjustable temperature limiting device for column
oven1963 – 204 – Moduline– dual flame ionization detectors
204 Moduline– dual/differential electrometer– optional ECD, micro cross-section, and sodium thermionic detectors

1963 – 1520
– dual columns, dual flame ionization and thermal conductivity– column oven - 17,900 cm3– matrix multi-level temperature programmer– automatic oven cool-down and reset to start temperature– on-column or flash vaporized injection– dual injectors with separate temperature controls– dual/differential electrometer and TCD electronics– separate detector and column ovens withproportional temperature control of detector oven
– two-position manual sample collector

1520

1963 – 1521 - TCD only, but upgradeable to add FID
1963 – 1522 - FID only, but upgradeable to add TCD
1963 – 205 Pestilyzer– dual columns– dual flow controllers– Pyrex injector inserts and columns– dual ECD– two-channel electrometer– dual rotometers for carrier gas– dual electron capture detectors

205 Pestilyzer

1965 – 202-1B – Moduline B– dual columns– TCD with WX filaments– solid-state Wheatstone bridge– column oven - 17,500 cm3

202-1B

1965 – 204-1B – Moduline B– dual columns– dual FIDs
– two independent electrometers204-1B

1965 – 1520B– larger oven and cabinet– dual columns, dual FIDs, dual TCD– matrix temperature programmer for multi-level
programming– automatic column oven door opener for cooldown– dual/differential electrometer for two independent
electrometers or differential mode for compensation
for column bleed– column oven - 17,500 cm3– interchangeable injectors– cooling rate – 400 oC to 100 oC in 3 minutes– adjustable temperature limiting device
for column oven

1520B

1965 – 1525B Preparative– automatic injection and collection of samples(collects 15 samples)– can be used as analytical or preparative GC– automatic sample injection – 0.025 ml to 1.5 ml

1525B

1965 – 1532 – Trace Gas Analyzer– dual helium ionization detectors– tritium ionization source– isothermal proportional controller for column oven
– liquid nitrogen trap for helium carrier– detection to low ppb V/V for many gases

1532

1966 – 2100 – “4 columns for U”– specifically designed for biomedical field and pesticide work
– four injectors/four detectors– common detector base for interchangeability– floor mounted column oven
– U-columns to avoid “race track” effect– column oven - 47,950 cm3– total glass system– two solid-state dual/differential electrometers for four detector
operation

2100

1967 – 202-B Natural Gas Analyzer– dual TCD– gas sampling valve– two backflush valves

202B Natural Gas Analyzer

1967 – 1520C– hybrid electrometer - solid state + tube input

1967 – 204-1C– hybrid electrometer - solid state + tube input

1968 – 1720 - Moduline D– TCD only
– column oven - 17,500 cm3– platinum resistance temperature probes(RTD)– four filament tungsten-rhenium hot wire
– isothermal proportional control orballistic temperature programming1968 – 1732 Trace Gas Analyzer

1720– no injectors– helium ionization detector

1968 – 1740 - Moduline D– FID or ECD only
– column oven - 17,500 cm3– new JFET solid state dual differential electrometer– single or dual capillary capability– solid-state temperature programmer: 0.5 oC/min to 20 oC/min– total glass system– detector temperature limit for 3H ECD detector

1968 - 1800 (1520D)– TCD and FID– new temperature controller with Pt Probe– completely solid-state electrometer with JFET
– optional 4-digit digital display of temperature setpoint in 0.1 oC– computer compatible, with remote start and ready signals– program rates – 0 to 31.75 oC/min in 0.25 oC/min increments– new matrix MLTP (solid state electronics)– automatic oven cool-down and reset to start temperature– 20 step column temperature programmer– two memory circuits for temperature programs– column temperature range: -100 oC to +400 oC– column oven - 17,500 cm31740

1970 – 1828 Preparative– dual column, dual TCD

1970 – 1848 Preparative– dual ionization detectors

1970 – 1868 Preparative– dual TCD and dual FID

1800

1970 – 2720
– TCD only
– all thermal zones thermally isolated with individual
temperature controls– dual, separately heated injector ports– automatic linear temperature programmer– column oven - 17,500 cm3– column oven temperature range: ambient to +400 oC– cooling rate: +400 oC to +100 oC in 3 minutes– temperature limit adjustable from +150 oC to +400oC

1970 – 2740
– ionization detectors only
– detector temperature limit for 3H ECD detector– hydrogen and air individually controlled with needle valves– thermocouple pyrometers with parallax correction– dual/differential electrometer for ionization detectors– dual, separately heated injector ports– automatic linear temperature programmer– column oven - 17,500 cm3– column oven temperature range: ambient to +400 oC– cooling rate: +400 oC to +100 oC in 3 minutes– temperature limit adjustable from +150 oC to +400oC– alkali FID for phosphorus, ECD scandium, later ECD nickel 63

2720

1970 – 2800
– FID and TCD– new JFET solid-state dual electrometer– dual, separately heated injector ports– automatic multi-linear temperature programmer– automatic oven cool-down and reset to start temperature– dual, separately heated injector ports– column oven temperature range: ambient to +400 oC– column oven - 17,500 cm3– cooling rate: +400 oC to +100 oC in 3
minutes– temperature limit adjustable from +150 oC to+400oC– optional alkali FID for phosphorus, ECD
scandium, later ECD Ni63

1970 – 2828 Preparative– dual column, dual TCD

1970 – 2848 Preparative– dual ionization detectors

1970 – 2868 Preparative– dual TCD and dual FID

2800

1975 – 3700 Series– single chassis, fresh redesign, completely
new injectors and injectors, designed tolater accept capillary (when restrictive
patent expired in 1979)– modular flexibility– Self Monitoring Electro-Sensor Panel (ESP)– large oven - 22,122 cm3– big pneumatics compartment– 5 independent temperature zones– versatile, adaptable injector system– column temperature range: -99 oC to 420 oC– two digital flow controllers with on/off valves3760
in heated oven, with pressure gauges– universal ionization detector base for easy interchange of detectors– digital automatic linear temperature programmer, also externally controllable from data system– rapid column heat up/ cool down: 50 oC to 250 oC in 5 min. and 250 oC to 50 oC in 9 min.,including 2 min. stabilization– subambient column oven: LN2 to -99 oC, or CO2 to -60 oC– temperature-controlled pneumatics compartment– two independent electronic bays for separate electrometers, or electrometer and TCD electronics

1975 – 3720
– TCD version, field upgradeable to 3760
– constant mean temperature filament operation– carrier loss protection with He and H2– TC cell – 140 µl 4 tungsten/rhenium filaments– linear range - > 105 butane

1975 – 3740
– ionization detector version, field upgradeable to 3760
– FID noise: 2X 10-12 amperes; FID linearity - >107
– general radioactive license for ECD; no site licensing required– ECD - constant current, pulsed mode; cell geometry - asymmetric cylinder, 300 µl– ECD carrier gas - N2
– ECD linear range - >104 for lindane– TSD linearity: N - 105; P - 104– TSD Selectivity N/C > 5X104, N/P >0.5
– FPD - dual flame optical emission– FPD dynamic range – P 105; S 103– FPD selectivity:P/C >105 gC/gP; S/C 103 to 106 gC/gS

1975 – 3760
– TCD/ionization version of 3700

1976 - 3711

3711

– automatic gas chromatograph– includes CDS111 Chromatography Data System– computer control of temperature programming,
detector settings and AutoSamplerTM

1978 – Vista 4600
– full microprocessor control of all operating
parameters– large column oven - 22,122 cm3–TCD plus ionization detectors– detectors same as 3700
– control of two AutoSamplerTM throughinstrument– faceless; control only through with Vista 401– 6 independent temperature zones; 8 external events

Vista 44 with 4600

1979 – Vista 6000
– Vista 4600 with CRT display/keyboard– stand alone GC

1979 – Vista 64– Vista 6000 with Vista 401

1980 – Vista 6500
6000

– satellite GC– controlled through 6000
– adds two more injectors,
detectors and AutoSamplersTM to system

1986 – 3500
– 3400 box for capillary only
– miniaturized detectors; 0.01” flame tip– on-column capillary injector (1090)
6500– column oven – 10,100 cm3– electronic readout of split flow
– electronic pressure readout of column headpressure

1986 – 3600

3500

– large box version of 3400
– large column oven - 19,600 cm3– spatially separated injectors– 6 independent thermal zones– 4 external events– “twin towers” dual AutoSamplersTM

1997 – 3800
– three injectors, three detectors– large column oven - 15,568 cm3– Ethernet communications with
Workstation– 7 independent temperature zones– 7 external events– electronic flow controllers– single electrometer range - 100µV to 1 kV
– detector electronic flow controllers– automatic flame-out/reignition for FID

3600

3800

DATA HANDLING DEVICES

1960 - Disc Integrator– area measurement on same paper
as peak tracing– inexpensive area computation– manual computation by counting
excursions

Disk Integrator

Duo-Counter
Duo-counter– digital readout for disc integrator– mechanical accumulator– manual recording of areas– no printer1965 – 450 Baseline Drift Corrector– miniature computer with memory, logic and integrating
circuits to automatically correct baseline drift

450

1965 – 470– built-in automatic baseline corrector– peak sensor meter– automatic peak area printout– automatic retention time printout

1965 - 471

470– similar to 470– auto-extended input range– visual data display471

1966 – 475– automatic digital baseline drift corrector– integrated microcircuitry– automatic peak detection and filtering– wide dynamic range (0-1400 mv)– unattended operation

475

1966 – 476– similar to 475, but without digital display

476

1967 – 477– low cost electronic integrator– simple operation– dynamic range – 0 to 140 mv– digital printout peak area

477

1968 – 200 GC Data System– on-line computer dedicated to GC data handling– process data from 10 GC simultaneously– linear range of 1,000,000– autoranging preamplifier– Varian Data Machine 620i minicomputer,16 bit word, 8 K RAM– teletype and paper tape input/output

200 GCDS

1974- 485
– built-in printer– separate slope sensitivity and filtering controls– automatic peak detection, peak integration and baseline correction– automatic mode for unattended operation– store data on punched tape
– optional display of retention time and peak area

1974 – CDS101– first microprocessor chromatography data system– automatically quantitates most chromatograms entirely
on its own– accurately measures areas of all peaks, both simple
and complex– automatically calculates results to any of 6 different
methods – internal standard, external standard,calibration factor, relative response factor, area %and normalized %.
– stores up to 9 complete method files for immediate use

CDS101

1976 – CDS111C- similar to CDS101- control of Model 3700 temperature programming, detector settings and Model 8000 AutoSamplerTM

1978 – Vista 401– floppy disk storage of raw data chromatograms andmethods (first implementation in any chromatography
data system)– two optional independent floppy disk drives– 16K RAM (80K RAM optional)– full multi-tasking memory AND multi-tasking
floppy disk
– full independent control of 4 Vista GCs and Vista LCs– full QWERTY alpha-numeric keyboard plus
number pad– built-in dual plot printer with plots of dual live runs,
storedversus live and dual stored runs
– high speed line printer (120 characters per sec.)– optional remote dual plot printer– 12” CRT display (16 lines of 64 characters) for
method entry and report review– input data range: -400 mV to +1 volt
– printer: 120 characters per second;
90 lines per min.
– independent control of two 8000 AutoSamplerTM
Vista 401
– replot of chromatograms with assigned baselines– point-by-point blank baseline subtraction, storedwith method– RS 485 single cable connection from instrument module to mainframe

1981 – Vista 402– similar to Vista 401– RAM memory increase to 144K
– optional multi-tasking double-sided, dual density floppy drives

1985 – DS601– single channel data system– automatic call up of any of 8 methods
on 3400 and 3600
– multi-tasking hard drive– Thinkjet printer/plotter with dual plots– built-in BASIC programming1985 – DS604– four channel data system– similar to DS601

1987 – DS651– similar to DS601– new color monitor– interactive graphics

1987 – DS654– similar to DS604– new color monitor– interactive graphics

DS654

1989 – Star Workstation– chromatography workstation based on PC andWindows operating system.
– full control of Varian 3400, 3600, 3800 and 3900 GCs– control of four simultaneous GCs and LCs– 10 Base 2 Ethernet communications with 3800

Star System Control

2002 – Galaxie Workstation– client-server or workstation protocol– full control of Varian 3800 and 3900
– control of other manufacturers’ GCs

Galaxie Status Overview

Lotus Consulting
310/569-0128 Fax 714/898-7461
email ebramstoncook@msn.com

5781 Campo WalkLong Beach, California 90803