122
  • Nanopump injector 2018 - Duration: 87 seconds.

    • 6 months ago
    • 310 views
    nano HPLC, TrueNano
  • VICI M Series pump 2018 - Duration: 2 minutes, 2 seconds.

    • 7 months ago
    • 92 views
    Liquid handling, chromatography, HPLC, HPLC pump
  • Multifunctional UHPLC system comprised of three Cheminert switching valves - Duration: 3 minutes, 38 seconds.

    • 1 year ago
    • 207 views
    A module added to a commercial UHPLC greatly enhances throughput and flexibility
  • UHPLC method development 2017 - Duration: 2 minutes, 58 seconds.

    • 1 year ago
    • 313 views
    UHPLC method development: Column selection with two Cheminert UHPLC selectors.
  • Stream selection with continuous flow to a common outlet - Duration: 2 minutes, 28 seconds.

    • 1 year ago
    • 470 views
    Using a Valco SC configuration multiposition selector to select from as many as 16 streams.
  • Components for UHPLC 2017 - Duration: 2 minutes, 52 seconds.

    • 1 year ago
    • 140 views
    Tubing, injectors, fittings, and more, optimized to meet the demands of UHPLC.
  • Components for Fast GC 2017 - Duration: 2 minutes, 38 seconds.

    • 1 year ago
    • 933 views
    Columns bundled for resistive heating, column/cooling fan modules, miniature detectors, and more.
  • VICI product overview as of May 2016

    Products from VICI 2016 - Duration: 5 minutes, 51 seconds.

    • 1 year ago
    • 174 views
    Chromatography
    Chemical analysis
    Analytical chemistry
  • Model 300 Gas Flow Controller - Duration: 93 seconds.

    • 4 years ago
    • 1,197 views
    gas chromatography, flow control, flow controller
  • Serial Communication with the Fast Temperature Programmer - Duration: 2 minutes, 23 seconds.

    • 4 years ago
    • 133 views
    Gas Chromatography, Fast GC, portable GC, high speed gas chromataography
  • Downloading the USB Driver - Duration: 41 seconds.

    • 4 years ago
    • 260 views
    Chromatography
  • Installing the USB Driver - Duration: 2 minutes, 15 seconds.

    • 4 years ago
    • 161 views
    Chromatography
  • Cheminert stream selection valves - Duration: 33 seconds.

    • 5 years ago
    • 664 views
    While there are a variety of flowpaths available in the Valco selector line, Cheminert selectors generally function as basic stream selectors; a selected stream goes to a common outlet, as shown be...
  • Microvolume sample injection with a diaphragm valve - Duration: 27 seconds.

    • 5 years ago
    • 549 views
    The internal sample (fixed volume) flowpath is used when very small volumes are required. The sample size is determined by a passage engraved on the valve cap, allowing precise, repeatable injectio...
  • Sample injection with a diaphragm valve - Duration: 33 seconds.

    • 5 years ago
    • 15,087 views
    With the valve in Position A, sample flows through the external loop while the carrier flows directly through to the chromatographic column. When the valve is switched to Position B, the sample con...
  • Loop sampling with backflush of pre column to vent with a diaphragm valve - Duration: 76 seconds.

    • 5 years ago
    • 3,335 views
    When components of interest are low boiling, this plumbing scheme allows "heavy" components with long retention times to be backflushed to waste. After the sample loop is loaded in Position A, the ...
  • Valco sample enrichment using dual precolumns - Duration: 73 seconds.

    • 5 years ago
    • 7,610 views
    Sample is injected by a separate injector onto one of two precolumns (stripper). Early eluting components vent at port 6 while components of interest are retained on the stripper. When the valve is...
  • Valco two different samples to same column - Duration: 56 seconds.

    • 5 years ago
    • 814 views
    A single 10 port valve permits alternate injections from two loops, which may be identical or of different sizes. This technique replaces a 4 port switching valve (used as the sample selector) and ...
  • Valco sample trapping with continuous flow to individual outlets - Duration: 2 minutes, 32 seconds.

    • 5 years ago
    • 2,957 views
    STF flowpath selectors are a variation of the ST flowpath, with the single difference that the non-selected streams are returned to their own vents or sources rather than being dead-ended or trappe...
  • Valco HPLC column selection - Duration: 49 seconds.

    • 5 years ago
    • 610 views
    ST flowpath selectors can be used for rapid access of up to six HPLC columns, eliminating instrument downtime involved in exchanging columns and leakage due to repeated changing of tubing fittings....
  • Valco two column selection - Duration: 40 seconds.

    • 5 years ago
    • 793 views
    When two different columns are required at frequent intervals at similar oven temperatures, a 6 port valve can provide rapid selection of the one to be used. The column not in use is protected by a...
  • Valco sample trapping - Duration: 101 seconds.

    • 5 years ago
    • 1,574 views
    ST flowpath selectors are used for multi-trap, multi-column, or multi-sample operations. A typical application, shown here, is the collection of fractions at timed intervals for analysis at a later...
  • Valco simultaneous injection of two different samples onto two different columns - Duration: 46 seconds.

    • 5 years ago
    • 374 views
    This 12 port plumbing arrangement is simply a dual 6 port diagram; while sample 1 is loaded and subsequently injected onto Column 1, Sample 2 is loaded and injected onto Column 2. If sample inlets ...
  • Valco stream selection with continuous flow to individual outlets - Duration: 2 minutes, 32 seconds.

    • 5 years ago
    • 1,567 views
    SF flowpath selectors select one of 4 to 16 streams, with the selected stream flowing from the valve outlet to a sample valve, pressure sensor, detector, column, etc., and each non-selected stream ...
  • Valco simultaneous injection of same sample onto three columns - Duration: 48 seconds.

    • 5 years ago
    • 316 views
    The 14 port valve permits a variety of plumbing arrangements. This one loads the same sample onto three sample loops for injection onto three different columns. This is used primarily by column man...
  • Valco simultaneous injection of the same sample onto separate columns - Duration: 46 seconds.

    • 5 years ago
    • 723 views
    In Position A, sample fills the two loops in series. In Position B, the sample is simultaneously injected into two separate flow systems. A single autosampler used with this flowpath can automate t...
  • Valco stream selection with dead ended streams - Duration: 2 minutes, 46 seconds.

    • 5 years ago
    • 1,680 views
    SD flowpath selectors select one of 4 to 16 dead-ended streams. This example illustrates a method for sampling non-pressurized containers which eliminates any possible effect from pressure differen...
  • Valco stream selection with continuous flow to common outlet - Duration: 2 minutes, 31 seconds.

    • 5 years ago
    • 1,374 views
    SC flowpath selectors select one of 4 to 16 streams, with the selected stream flowing from the valve outlet to a sample valve, pressure sensor, detector, column, etc., and the non-selected streams ...
  • Valco HPLC column selection - Duration: 71 seconds.

    • 5 years ago
    • 1,025 views
    SD flowpath selectors select one of 4 to 16 dead-ended streams. This example illustrates a high pressure SD valve (or Cheminert Model C5) used for HPLC column selection. This technique allows multi...
  • Valco sample injection - Duration: 33 seconds.

    • 5 years ago
    • 5,692 views
    With the valve in Position A, sample flows through the external loop while the carrier flows directly through to the chromatographic column. When the valve is switched to Position B, the sample con...
  • Valco sample injection and heart cut to detector - Duration: 67 seconds.

    • 5 years ago
    • 2,299 views
    The sample loop is loaded in Position A. When the valve is switched, the contents of the loop are injected onto the analytical column. The front cut elutes from the column and goes to vent at port ...
  • Valco same sample to different loops - Duration: 56 seconds.

    • 5 years ago
    • 632 views
    In a dual external sample loop configuration, sample is injected in both positions. In Position A, Loop 2 is loaded while the mobile phase flows through Loop 1 and onto the column. In Position B, t...
  • Valco microvolume sample injection - Duration: 66 seconds.

    • 5 years ago
    • 1,198 views
    The internal sample (fixed volume) flowpath is used when very small volumes are required. The sample size is determined by a passage engraved on the valve rotor, allowing precise, repeatable inject...
  • Valco loop sampling with two column sequence reversal - Duration: 64 seconds.

    • 5 years ago
    • 825 views
    This is ideal for fixed gas-from-CO2 analysis where no "high boilers" are present. Column 1 is packed with a porous polymer and Column 2 with molecular sieve. The sample loop is loaded in Position ...
  • Valco loop sampling with backflush to detector - Duration: 59 seconds.

    • 5 years ago
    • 856 views
    One valve performs the functions of sampling and backflush valves, simplifying operation and reducing cost. When components of interest are detected, the strongly retained components are backflushe...
  • Valco loop sampling with backflush of pre column to vent - Duration: 76 seconds.

    • 5 years ago
    • 975 views
    When components of interest are low boiling, this plumbing scheme allows "heavy" components with long retention times to be backflushed to waste. After the sample loop is loaded in Position A, the ...
  • Valco heart cut trapped in a loop and injected onto a second column - Duration: 56 seconds.

    • 5 years ago
    • 897 views
    Sample is injected (using a separate injector) onto an analytical column. Early eluting components (front cut) pass through a trapping loop and are detected at port 3. The valve is then switched, a...
  • Valco dual microvolume sample injection - Duration: 49 seconds.

    • 5 years ago
    • 1,007 views
    This microvolume injector can be used to alternate between two different samples. Each time the valve is switched, a sample is injected.

    When the two sample inlets are connected in series, the val...
  • Valco backflush of precolumn to vent - Duration: 42 seconds.

    • 5 years ago
    • 1,544 views
    This plumbing scheme allows slower eluting components (end cut) which are not of interest to be backflushed to vent. Often a shorter version of the analytical column is used as the precolumn.

    Once...
  • Valco detector selection from one column and auxiliary carrier - Duration: 33 seconds.

    • 5 years ago
    • 1,131 views
    This unique configuration allows analysis of different parts of one analysis with two different detectors, without splitting or multiple injections. For example, fixed gases can be analyzed with a ...
  • Valco alternate column regeneration - Duration: 47 seconds.

    • 5 years ago
    • 1,761 views
    When columns must be regenerated following each analysis, this technique permits automation of the process. While one column performs the analysis, the second column undergoes regeneration by use o...
  • Cheminert loop sampling with backflush to detector - Duration: 59 seconds.

    • 5 years ago
    • 259 views
    One valve performs the functions of sampling and backflush valves, simplifying operation and reducing cost. When components of interest are detected, the strongly retained components are backflushe...
  • Cheminert sample injection - Duration: 33 seconds.

    • 5 years ago
    • 666 views
    With the valve in Position A, sample flows through the external loop while the carrier flows directly through to the chromatographic column. When the valve is switched to Position B, the sample con...
  • Cheminert selector with continuous flow option - Duration: 17 seconds.

    • 5 years ago
    • 343 views
    Many Cheminert stream selectors are available with a "flow-through" option, in which the non-selected steams flow through individual outlets.
  • Cheminert HPLC column selection system - Duration: 60 seconds.

    • 5 years ago
    • 290 views
    The column selector system comprises two Model C5 stream selection valves mounted on a single microelectric actuator, which can be controlled manually, via remote logic level signal, or by RS-232 i...
  • Cheminert microvolume sample injection - Duration: 48 seconds.

    • 5 years ago
    • 305 views
    The internal sample (fixed volume) flowpath is used when very small volumes are required. The sample size is determined by a passage engraved on the valve rotor, allowing precise, repeatable inject...
  • Cheminert detector selection from one column with auxiliary carrier - Duration: 32 seconds.

    • 5 years ago
    • 224 views
    This unique configuration allows analysis of different parts of one analysis with two different detectors, without splitting or multiple injections.
  • Cheminert alternate column regeneration - Duration: 48 seconds.

    • 5 years ago
    • 503 views
    When columns must be regenerated following each analysis, this technique permits automation of the process. While one column performs the analysis, the second column undergoes regeneration by use o...
to add this to Watch Later

Add to

Loading playlists...