Burettes
More precise than pipettes, burettes have a stopcock that allows you to release liquids in tiny drops. They’re often used when the volume of liquid that needs to be dispensed is unknown, such as in titration.
Fill Style A burettes by pouring your sample in the connected reservoir bottle and screwing the cap back on to secure. To transfer your sample to the burette, squeeze the sides of the bottle to feed the sample through the reservoir tube. Release the sides of the bottle when the burette reaches the capacity you want.
Fill Style B burettes from the top using a funnel.
| Capacity, ml | Capacity Tolerance, ml | Graduation Marks | Reservoir Capacity, ml | Base Dia. | Ht. | Burette Material | Burette Color | Reservoir Material | Reservoir Color | Seal Material | Spout Material | Each | ||
| A | 10 | -0.03 to +0.03 | 0.05 ml | 500 | 4 5/8" | 22" | Borosilicate Glass | Clear | Polyethylene Plastic | Semi-Clear White | Latex Rubber | Polypropylene Plastic | 000000 | 0000000 |
| A | 25 | -0.05 to +0.05 | 0.1 ml | 1,000 | 5 3/8" | 25 1/2" | Borosilicate Glass | Clear | Polyethylene Plastic | Semi-Clear White | Latex Rubber | Polypropylene Plastic | 000000 | 000000 |
| A | 50 | -0.08 to +0.08 | 0.1 ml | 1,000 | 5 3/8" | 36 1/4" | Borosilicate Glass | Clear | Polyethylene Plastic | Semi-Clear White | Latex Rubber | Polypropylene Plastic | 000000 | 000000 |
| B | 25 | -0.06 to +0.06 | 0.1 ml | __ | __ | 22 1/2" | Borosilicate Glass | Clear | __ | __ | __ | __ | 000000 | 000000 |
| B | 50 | -0.1 to +0.1 | 0.1 ml | __ | __ | 29" | Borosilicate Glass | Clear | __ | __ | __ | __ | 000000 | 000000 |
| B | 100 | -0.2 to +0.2 | 0.2 ml | __ | __ | 30" | Borosilicate Glass | Clear | __ | __ | __ | __ | 000000 | 000000 |
Burettes with Digital Readout
Reduce errors and increase accuracy--these burettes have a digital readout, so you don't have to calculate how much liquid you've dispensed. Often used when you aren't sure how much liquid you need to dispense, such as in titration, these burettes release liquid drop by drop. Turn the precision knobs on the side to lower the plunger and dispense your liquid. To draw liquid in, turn the knobs in the opposite direction. The burette detects your turn direction, so it only displays the volume you’ve dispensed, not the volume you’ve drawn in. You can adjust the titrating tube vertically and horizontally to fit different bottle sizes or if you need to make room for an additional instrument, such as a magnetic stirrer. Easily take them apart to clean, change inspection windows, and replace batteries.
They come with both clear and amber inspection windows. Use the amber window to protect UV-sensitive liquids. To fit on some of the most common laboratory bottles, they also come with thread adapters.
Burettes with an RS-232 communication protocol can transmit data to your PC with the included USB cable.
| Capacity, ml | Capacity Tolerance, ml | Droplet Size | For Bottle Thread Size | Intake Tube Lg., mm | Ht. | Burette Material | Burette Color | Spout Material | Batteries Included | Features | Includes | Each | |
Burettes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | -0.01 to 0.01 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 000000000 |
| 25 | -0.02 to 0.02 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 00000000 |
| 50 | -0.03 to 0.03 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 00000000 |
Burettes with RS-232 Communication Protocol | |||||||||||||
| 10 | -0.01 to 0.01 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 00000000 |
| 25 | -0.02 to 0.02 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 00000000 |
| 50 | -0.03 to 0.03 | 20 µL | GL-45 | 170 to 330 | 9 3/4" | Borosilicate Glass | Clear | PTFE Plastic | Yes | Adjustment Knob, Adjustable Titrating Tube | Two Clear Inspection Windows, Two Amber-Colored Inspection Windows, GL-32 Thread Adapter, S-40 Thread Adapter, NS-29/32 Thread Adapter, Power Cord | 0000000 | 00000000 |