Titrette Bottletop Burette

Item# 0166-4760251

Regular Price: $1814.01

Today's Price: $1563.80

Availability: Usually ships in 2-3 business days

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Titrette Bottletop Burette

The BRAND Titrette is the only bottletop burette that meets Class A accuracy specifications for glass burettes. If needed, it can offer the precision of 3 decimal places below 20mL. It can be quickly and easily disassembled in a matter of minutes - for cleaning, to replace the piston or cylinder, or to replace the batteries. Available in volumes from 10mL to 50mL, and with an optional RS232 communications interface.

Product Features:


Frequently Asked Questions

1. Why do the battery compartments on my Titrette have silicone covers?
These covers help protect the battery contacts from corrosion.

2. Do I need to fill the entire cylinder?
No, you do not. You only need to fill the cylinder as much as you think will be necessary.

3. Can I change the battery on my Titrette ?
Yes. The Titrette uses standard AAA alkaline batteries.

4. The Titrette looks like some sort of fancy digital dispenser. Can I use it to for dispensing applications?
It's not the right tool for the job. The Dispensette is designed to dispense preset volumes of liquids. The Titrette is designed for titration - dispensing liquids whose exact volume is not known until the endpoint is reached, upon which time the dispensed volume is recorded by the end user. It is possible to repetitively dispense compatible liquids with the Titrette , but it is not a convenient way to do so.

5. Which position should I leave the Titrette piston between titrations?
When the Titrette is left idle between titrations, the piston should be left in the uppermost position to reduce crystal formation. This is particularly important when using alcoholic potassium hydroxide as a titrant.

6. Why would I need a drying tube and how do I install one?
A drying tube provides a single path for air to entering the bottle to displace the liquid leaving. By forcing all air through the drying tube, CO2 (carbon dioxide) and/or moisture can be absorbed out, to keep it from degrading titrants that are sensitive to these things. To fill the drying tube, remove the cap and place a small wad of cotton in the bottom of the tube to keep the drying reagent inside. Add the drying reagent to the tube, and add another wad of cotton to keep the drying reagent in place. To install the drying tube, first wrap the threads of the tube with PTFE tape, available at any hardware store, in the plumbing section. Remove the accessory port cover that is on the other side of the valve block from the discharge tube. Use the tool provided, the two metal pins will fit into the cover, and it will unscrew. Screw in the drying tube.

7. Why don't you sell drying reagent?
The quantities of drying reagent that we could possibly sell in a year would not be enough to assure that our customers would get fresh reagent at a reasonable price. Drierite is a popular drying reagent available from most laboratory supply dealers.

8. I have a 25mL Titrette . Can I titrate more than 25mL?
Yes, you can. Simply rotate the handwheels backward to fill the instrument, and continue titrating. The instrument display does not increment when filling the instrument.

9. In the middle of titration, I noticed that there were bubbles in my cylinder. Is there any way to purge them?
Yes. Press the "pause" button on the front of the instrument to keep the counter from incrementing, and turn the priming valve perpendicular to the titrating tube. You can then recirculate and prime the cylinder. When you're ready to titrate, turn the valve in line with the titrating tube, and push the pause button again to get back into titration mode.

10. Should I buy a 25mL or a 50mL Titrette ?
It depends on your needs. The 50mL Titrette delivers twice as much volume with the same amount of turning of the handwheels as the 25mL model. So, if you do small volume titrations, you would want the 25mL model, as you can titrate slower and with finer control. If the volumes you are titrating are larger, the 50mL model will allow you to deliver more titrant quicker. The resolution is the same on both models - 1 L.

11. The catalog mentions that dispensers for strongly crystallizing liquids or fuming acids and bases are available. What are they?
They are the Dispensette dispensers. These instruments are much more resistant to concentrated acids and bases. Concentrated acids and bases are generally not good reagents for titration.

12. Is the Titrette a Class A burette?
Strictly speaking, no. Neither ASTM nor ISO has yet created a "Class A" designation for bottletop burettes. The Titrette does, however, meet the error limits or volumetric tolerances required for Class A glass burettes per DIN EN ISO 385 and ASTM E287. So, while it's technically not a "Class A" burette, the results obtained with a Titrette should be as accurate as one performed with a Class A glass burette of the same nominal capacity.

WARNING These products can expose you to chemicals including Carbon black (airborne, unbound particles of respirable size), which is known to the State of California to cause cancer, and Di-n-butyl Phthalate (DBP), which is known to the State of California to cause birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.

The Titrette bottletop burette is supplied with: 45mm thread, telescoping filling tube (170-330mm), recirculation tube, 2 batteries (AAA/UM4/LR03), 3 bottletop adapters, 2 amber colored light shield inspection windows, performance certificate, operating manual, and one-year warranty. Additionally included with RS232 interface: 2m interface cable (9-pin, sub-D plug connector), CD (driver software and open RS232 communication protocol).

Volume
mL
Partial Volume
mL
A*
CV*
Standard
Cat. No.
Interface
Cat. No.
%
L
%
L
10
10
0.10
10
0.05
5
4760141
4760241
5
0.20
10
0.10
5
1
1.00
10
0.50
5
25
25
0.07
18
0.025
6
4760151
4760251
12.5
0.14
18
0.05
6
2.5
0.70
18
0.25
6
50
50
0.06
30
0.02
10
4760161
4760261
25
0.12
30
0.04
10
5
0.60
30
0.20
10

A*=Accuracy, CV*=Coefficient of Variation

*The value of accuracy and coefficient of variation are final test values referring ot the delivered nominal volume, instrument and distilled water at equilibrium with ambient temperature (20 C/68 F) and with smooth operation.

Shipping Information: Weight 2.85 lbs
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    Lab Supplies Liquid Handling Titrette Parts Accessories - 4760251 - Titrette Bottletop Burette
     
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