Kern precision balance EWJ 600-2SM, 600 g / 0.01 g, verifiable

The Kern EWJ 600-2SM is a compact precision balance for everyday laboratory use, with a weighing range of up to 600 grams and a readability of 0.01 grams. The balance adjusts itself internally and automatically, every two hours as standard, without the need for an external adjustment weight or user intervention. If you require a verified display for the same balance, you order the conformity assessment according to the NAWI Directive (2014/31/EU) at the same time as the balance. Subsequent conformity assessment is not possible.

Automatic internal adjustment

The EWJ 600-2SM features an automatic internal adjustment function that readjusts at standard intervals of every two hours. Reproducibility and linearity are 0.01 grams and ± 0.03 grams respectively, whilst the resolution is 60,000 parts. Once the sample has been placed on the balance, the reading stabilises within 2 seconds. According to Kern, a minimum sample weight of 20 grams is sufficient to achieve a measurement uncertainty of 0.1 % at k=2.

Conformity assessment under the NAWI Directive, optional

In its standard configuration, the EWJ 600-2SM is an unverified precision balance. For applications requiring a verified display, conformity assessment according to the NAWI Directive (2014/31/EU) can be ordered as an option (item no. 965-216), but only in conjunction with the balance ex works. Subsequent conformity assessment is not possible. In the version with conformity assessment, the verification scale interval (e) is 0.1 grams, and the smallest verifiable load is 0.5 grams.

Weighing pan, draught shield and housing

The weighing pan has a diameter of 120 millimetres and is made of stainless steel, as is the weighing platform. The supplied draught shield is rectangular and removable; its internal dimensions are 134 x 128 x 80 millimetres, and its external dimensions are 144 x 139 x 81 millimetres. When fully assembled, the housing has external dimensions of 220 x 340 x 180 millimetres, and the net weight is 2.8 kilograms. The aluminium load cell is silicone-coated and protected against dust and water jets according to IP65.

Interfaces: Basic model without data connection, Bluetooth optional

In the basic model, the EWJ 600-2SM has no data interface. Users wishing to process measured values digitally can choose between Bluetooth BTC version 2.0 and Bluetooth BLE version 4.0 ex-works.

Typical applications

With a weighing range of 600 grams and a readability of 0.01 grams, the EWJ 600-2SM covers classic laboratory weighing tasks, from sample preparation to formulation weighing. If ordered factory-verified (item no. 965-216), it is also suitable for applications where a verified display is required.

• Industrial and research laboratories
• Quality control
• Formulation and sample weighing
• Applications subject to mandatory verification, provided it is ordered factory-verified (item no. 965-216)

Regulatory information

As an electrical device, the balance falls under the ElektroG. The manufacturer Kern & Sohn GmbH is registered under the WEEE registration number DE 80821200. How to return old appliances is described on the page Environment and disposal.

Frequently asked questions about the EWJ 600-2SM

Is the balance verified on delivery?

No, the EWJ 600-2SM is not verified in its standard configuration. Conformity assessment according to NAWI (2014/31/EU, item no. 965-216) can only be ordered together with the balance ex works. Subsequent conformity assessment is not possible.

How often does the balance adjust itself?

Automatically, at standard intervals of every two hours, via the internal automatic adjustment function.

Can the scale be connected to a PC or tablet?

Not in the basic model; the EWJ 600-2SM does not have a data interface for this purpose. Bluetooth BTC 2.0 or Bluetooth BLE 4.0 can be ordered ex-works as an option.

How big is the weighing pan?

120 millimetres in diameter, made from stainless steel.

How long is the warranty?

According to Kern & Sohn, this device comes with a 2-year warranty. Kern grants 3 years on products with a list price of €500 or more and 2 years on products below that and on components; wear parts such as batteries and rechargeable batteries are excluded. Warranty repairs are carried out by Kern or by a Kern dealer.

Technical details

Scope of delivery

• EWJ 600-2SM precision balance
• Draught shield (standard, rectangular, removable)
• Protective cover
• Power supply unit with adapters for the EU, UK, USA and Switzerland

Individual requirements and procurement service

The NAWI conformity assessment (item no. 965-216) can only be ordered ex-works together with the balance; in addition, a DAkkS calibration certificate (item no. 963-127) and the confirmation of manufacturer specification (item no. 969-517, only in conjunction with the DAkkS calibration certificate) are also available. Enquiries about these and other accessory requests relating to Kern precision balances are handled through our procurement service.