Brand Titrette SH Bottle-mounted Burette, 25 ml, Soxhlet-Henkel Scale, 4760451

The Titrette SH is a special version of the digital bottle-top burette, featuring a display in degrees Soxhlet-Henkel rather than millilitres. This scale is commonly used in milk analysis, where the acidity is traditionally expressed in Soxhlet-Henkel units rather than converting the volume of standard solution used into millilitres.

Display directly in the familiar unit

Whereas a standard Titrette displays the volume consumed in millilitres and the conversion to degrees SH would have to be carried out manually, the Titrette SH displays the value directly in the target unit. This saves a calculation step and eliminates the potential for error that can arise in the process.

Accuracy limits

Brand specifies an accuracy of 0.07 per cent (or 18 µl) and a coefficient of variation of 0.025 per cent (or 6 µl) for the Titrette SH, identical to the standard 25-ml version.

Typical applications

• Determination of the acidity of milk according to the Soxhlet-Henkel method in milk analysis
• Dairies and dairy laboratories with an established SH scale in their routine procedures
• Businesses wishing to avoid the conversion step from ml to SH degrees in day-to-day operations

Selection guide: SH scale or millilitres

Those who traditionally record the acidity of milk in degrees Soxhlet-Henkel can avoid the need to convert from millilitres by using the Titrette SH. For all other titrations where the volume used is required in ml, the standard Titrettes in 10, 25 or 50 ml are the right choice, with an optional RS232 interface for electronic data transfer to a LIMS if required.

Titrette SH versus glass burette and Dispensette

A glass burette with an SH scale still requires reading at the meniscus, whereas the Titrette SH displays the value digitally. Compared with a Dispensette, the fundamental difference remains: the Dispensette repeatedly dispenses a fixed volume, whilst the Titrette SH continuously totals the volume used up to the inflection point of the titration, only directly in SH degrees rather than millilitres.

Technical details

Use and maintenance

The Titrette is screwed directly onto the stock bottle of the calibration solution using one of the three PP bottle adaptors supplied (GL 32, S 40, NS 29/32) directly onto the storage bottle containing the standard solution; the telescopic suction tube can be adjusted to bottle heights between 170 and 330 mm. Before first use and after each bottle change, the system must be vented, as with any piston burette, to ensure that no air bubbles in the cylinder affect the dosing accuracy. The return tube allows any accidentally dispensed excess titrant to be returned to the bottle, rather than having to restart the titration. Two brown-tinted light-protection windows shield light-sensitive titrants without the need to cover the bottle completely. The counter is powered by two AAA/UM4/LR03 micro-batteries, which can be replaced without tools as soon as the display indicates a low battery voltage. A mains connection is not required; the device remains operational even at workstations without a socket.

Scope of delivery

• Titrette SH bottle-mounted burette for GL45-threaded bottles
• Quality certificate
• Telescopic suction tube, 170 to 330 mm
• Backflow tube
• 2 micro batteries (AAA/UM4/LR03)
• 3 PP bottle adaptors (GL 32, S 40, NS 29/32)

Frequently Asked Questions

• What does the scale on the Titrette SH indicate? It indicates the volume in degrees Soxhlet-Henkel rather than in millilitres, for direct use in milk analysis.
• How accurate is the Titrette SH? Accuracy 0.07 per cent or 18 µl, coefficient of variation 0.025 per cent or 6 µl; according to the manufacturer’s specifications, identical to the 25-ml standard version.
• Which bottle threading is compatible with the Titrette SH? GL45 directly; via a PP adapter, it is also compatible with GL 32, S 40 and NS 29/32.
• Is the Titrette SH also available with an RS232 interface? We can clarify this on request; the standard versions in 10, 25 and 50 ml are available with this.

Before placing an order, it is worth making a quick enquiry via the LT procurement service in case there are any relevant differences in the Scope of delivery.

Individual requirements and procurement service

You can enquire about suitable bottle adaptors, replacement suction tubes or other accessories for the Titrette series via LT Laborhandel’s procurement service. Please contact us at lt-laborhandel.com/service.