Most multichannel work happens under two hundred microlitres, so an instrument covering a millilitre a channel is a specialist purchase for washing, plating and media changes. Beyond channel count the choices are the repeat instruments, which dispense many identical volumes from one aspiration, and positive displacement, which stops liquid properties mattering.
An lts pipette and the tip system behind the name
An lts pipette uses a low retention tip with a stepped seal rather than a tapered cone, so tips seat with much less force and eject with less, which matters over a long plate session. The consequence is that tips are not interchangeable with cone sealing instruments, so choosing this system commits a laboratory to one tip line. Accuracy is unaffected either way when tips match.
A repeat pipette and where it earns its cost
A repeat pipette dispenses a set volume many times from one aspiration using a positive displacement syringe tip, which is what makes a plate fill quick and consistent and what makes it handle viscous and volatile liquids. Tip size sets both the dispense volume and the number of dispenses, so the choice is arithmetic against the plate rather than a preference.
A repetitive pipette, the same instrument described differently
A repetitive pipette and a repeat pipette are the same positive displacement dispenser under two names, which splits a catalogue search in half. What differs between products is the syringe tip range, whether the volume is set by a dial or electronically, and the force needed over hundreds of dispenses, which is what decides comfort in a long session.
An electronic repeater pipette and the programmes it adds
An electronic repeater pipette sets the dispense volume and count on a display and can run mixing, dilution and reverse pipetting programmes, which is what makes a complicated plate layout repeatable between operators. The cost is battery management and service. For a single repeated volume the mechanical instrument is cheaper and just as accurate.
A positive pressure pipette and the air cushion it removes
A positive pressure pipette pushes the liquid out with a piston in contact with it rather than through an air cushion, which is why density, viscosity and vapour pressure stop affecting the volume. The consumable is a capillary and piston assembly rather than a tip, so cost per transfer is higher and the instrument is chosen per application rather than per laboratory.
pipette volume, and what is really being asked
A question about pipette volume is usually about which range to buy, and the answer is the range whose published accuracy at your working volume is acceptable, because every instrument is least accurate at the bottom of its span. Overlapping ranges are normal in a laboratory, and a protocol should name the volume rather than the instrument.
pipetting accessories worth having
pipetting accessories that change results rather than comfort are a shelf or carousel that keeps a tip off the bench, a charging stand that keeps an electronic instrument usable, and a calibration kit with a balance of adequate readability. Replacement seals and pistons are what keep an instrument in service, and their availability is worth checking before a brand is standardised on.
A 1000 ul multichannel pipette and what it is for
At a millilitre a channel the uses are washing, media changes in deep well plates and reservoir transfers rather than assay setup, and the instrument is heavy enough that channel count is limited. Tip availability at that volume is the practical constraint, and the plate's well volume decides whether the full range can be used at all.
A 1000ul multichannel pipette written without the space
A 1000ul multichannel pipette is the same instrument as the spaced spelling, and at that volume the practical limits are tip availability, the plate's own well volume and the weight of a loaded head. Washing and media changes in deep well plates are the uses; assay setup at those volumes is rare, which is why the format is a specialist purchase.
Questions people ask about 1000 ul multichannel pipette
Are LTS tips interchangeable with ordinary tips?
No. The seal is a stepped design rather than a taper, so the system commits you to one tip line.
Repeat or electronic repeater?
Mechanical for one repeated volume, electronic where mixing, dilution or a varied layout has to be repeatable.
Which range should be bought?
The one whose published accuracy at the working volume is acceptable. Every pipette is worst at the bottom of its span.