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Objektnummer	B00018874
ID-number	018874
Object name	Metrohm KF 831
Status	Archiv

Status, terms of delivery and payment

Verification of devices

The second-hand devices are verified by Labexchange Service GmbH before delivery. You are receiving only fully functional devices.

Dispatch time

The stated dispatch times are the shortest possible ones for each article. The effective dispatch times can vary. The effective dispatch times will be stated in the order confirmation.

As a matter of principle, we are offering collective deliveries. The shipping time is calculated based on the position with the longest lead time. A partial delivery is possible on explicit request.

Shipping methods

Parcel services, forwarding agencies, self-pickup, delivery by Labexchange fleet.

Delivery information

Prices exclude shipping costs. Stated shipping costs are to be expected. Deviations are possible. If transport costs are not specified, please ask separately for them.

The stated transport and packing charges apply to the most favorable route if transport and are to be understood as subject to verification due to unexpected cost increases. By reason of unpredictable events, cargo rates and delivery times can change at any time and therefore have to be adapted to the recent situation. Import formalities and possible customs charges will be borne by the purchaser. Incoterm coding according to Incoterms 2010: For persons who collect the devices themselves: EXW, for dipatch by sea: CFR, by air freight: CPT, other shipments: DAP. Note for international shipments: A proof of preference/EUR1 will not be issued by us. When self-collecting/ordering EXW from countries within or outside the European Union, 16% VAT will be retained as a deposit until we have received the corresponding confirmation of arrival/bill of delivery from the buyer.

Terms of payment

We do not accept payment by letter of credit, PayPal, etc. In each case the invoice amount is payable without deduction. Discount is not granted.

Country	Possible payment methods	Comment
DE, AT, CH	Payment by invoice, payment in advance, paymet by credit card	Payment by invoice is only possible for corporate clients.
NL, BE, LU	Payment by invoice, payment in advance, payment by credit card	Payment by invoice is only possible for corporate clients
Other countries	Payment in advance, payment by credit card

Our General Terms of Sale, Delivery and Payment are valid and are available for download here.

The goods are offered subject to prior sale.

Definition of status

All articles are used articles, except an article is listed especially as a new device.

Status	Condition	Comment
Immediately available	Used	The article is fully functional and in impeccable condition. It can be shipped immediately.
In stock	Used	The article is on stock. Our service technicians will verify the article before delivery. You are receiving only a fully functional article.
Published	Used	The article is still with the provider. After your order the article will be purchased and verified by us before being shipped to you. A certificate of operativeness as well as a service report are included in delivery.
New device	new	The article is brand new and unused. Regarding new equipment the guarantee/warranty conditions of the corresponding manufacturer apply.
Labprocure	Used	Labprocure GmbH, as the advertiser, is responsible for the content of this device offer. Labprocure assumes liability for the offers advertised here and for the photos and offer texts included. Labprocure GmbH, Bruckstraße 58, 72393 Burladingen.

manufacturer: Metrohm

model: KF 831

The following illustrations and descriptions refer to the instrument model and are drawn from brochures. They do not represent the scope of delivery. Please refer to the text of the offer for the exact scope of delivery.

831 KF Coulometer including generator electrode with diaphragm

Affordable KF Coulometer including titration cell with diaphragm for water determination right down to trace levels.

The KF Coulometer has established itself for the determination of very small amounts of water. Thanks to its reliability, backlit graphical display, multilingual dialog and easy operation, the 756 KF Coulometer has become standard equipment in many laboratories. The clear display provides information about the relevant titration parameters and gives an unmistakable presentation of the course of titration in the form of a curve showing µg water against time.

Recommended measuring range: 10 µg ... 200 mg absolute water

Compact Karl Fischer titrator with coulometric reagent generation; absolute method, therefore no titer determination necessary, for KF water determinations down to the lower microgram range in liquids, solids and gases.

Includes titration cell with diaphragm, 728 Magnetic Swing-out Stirrer and extensive accessories

Features:

Backlit LCD graphics screen
Easy to operate thanks to dialog in English, French, German, Spanish, Italian, Portuguese, Swedish
Memory for up to 100 methods
With two RS 232C (DB9) data interfaces for connection of printer, balance or PC
Connection possibility for PC keyboard and barcode reader

Option:

reagent exchange with connectable Dosino dosing system - automation with 774 Oven Sample Processor

Technical specifications

Modes

KFC: Coulometric KF titration

KFC-B: Coulometric KF titration with blank deduction

BLANK: Blank determination

GLP: Validation of the Coulometer

Endpoint indication

Voltametric, AC indication

Ipol: 2, 5, 10, 20 or 30 uA adjustable

Iodine production

Pulse with variable current strength and length

Current at the generator electrode: 100, 200, 400 mA

Titration speed

max. 2.24 mg H₂O/min

Determination range

10 ug to 200 mg H₂O

Resolution

0.1 ug H₂O

Reproducibility

Sample: Reagent manufacturer's standard.

With 10 ug ... 1000 ug H₂O: ± 3 ug

With >1000 ug H₂O: 0.3% or better

Drift compensation

automatic, manual or none

Materials

Housing Metal, powder coated

Keypad cover Polycarbonate (PC)

Display

Graphical LCD, 192 x 64 dots

Field: 100 x 37 mm

LED back-lit

Printer (only at 756)

Built-in thermal printer

Paper width 57 mm

144 pixel or 24 characters per line

Memory

Method storage for approx. 100 methods

Silo memory for sample data and results

Stirrer control

On/off switch manual and coordinated with the titration process

RS232 interface

2 separate interfaces, each can be configured for printer, balance or computer connection: Completely controllable from external control unit

Remote Input/Output-lines

Connection for Oven, Oven Sample Processor, robot.

With optional Remote Box:

Connection for barcode reader and PC keyboard

Dosino connection

For automatic reagent exchange

Ambient temperature

Nom. operation range 5 ... 40 °C

Storage – 20 ... 60 °C

Transport – 40 ... 60 °C

Safety specifications

Designed and tested in accordance to IEC publication 1010, safety class I. This manual contains information and warnings which have to be followed by the user to ensure safe operation and to retain the apparatus in safe condition.

Mains connection

Voltage 100...240 V ± 10 %

Frequency 50 ... 60 Hz

Power consumption max. 38 W

Fuse 2 x T1 H 250 V (only to be replaced by Metrohm Service

using the same type)

Additional electronic overload protection

Dimensions

At 756 At 831

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Width 145 mm 145 mm

Height 194 mm 169 mm

Depth 307 mm 307 mm

Weight, including keypad approx. 4.5 kg approx. 3.8 kg

Product group: Titrators (Karl-Fischer)

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Metrohm KF 831

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