Author Archives: Cristina Pop

LabHEAT standard heating mantles series KM-G (SAF Wärmetechnik)

In chemical and biotechnical laboratories these heating mantles belong to the standard equipment because many reactions in this areas are temperature dependent. All heating mantles and also accessoires such as tripod, support ring or regulators are on stock. Special versions for other specifications, voltages or power and for temperatures up to 900 °C available on request.

  • For operating temperatures up to 450 °C
  • Flexible glass yarn heating element
  • An even heat transfer and a gentle treatment of the glass flask
  • High quality design, traditionell made by hand work
  • Thermally insulated and earthed
  • Sizes from 500 ml with Ø 60 mm bottom hole
  • Standard with four mounting hooks
  • With heating-zone switchand residual current detection (RCD)
Volume ml Flask-Ø mm Power W Heating zones Order Number
25 41 65 1 459195013
50 51 75 1 459195017
100 64 120 1 459195024
250 85 180 2 459195036
500 105 250 2 459195044
1000 131 450 2 459195054
2000 166 600 2 459195063
3000 185 800 2 459195068
4000 207 900 2* 459195071
5000 223 1200 2* 459195073
6000 236 1400 2* 459195076
10000 279 2000 2* 459195086
20000 345 2200 2* 459195091

*also available with 4 heating zones

The source of the above information is IDL GmbH&Co.KG Germany.

The meaning of the letter “g” or “a” after pressure measuring units

What is the meaning of the letter “g” or “a” after pressure measuring units?

These letters indicate either the “manometric/ instrumental measuring mode” or the “absolute measuring mode”, where the gauge-mode pressure (g from the English gauge) is one measured normally by observing the surrounding pressure and the absolute-mode pressure (a from the Engl. absolute) is measured by observing the zero pressure.

In spite of their inscription on many instruments, abbreviations like barg, psig, kPaA, kPaG, bara, psia, etc. are not legitimate and create conflicts with the international standards – they should not be used.

In order not to engage in details it is essential that you know the following:
Absolute pressure (…a) = manometric pressure (…g) + atmospheric pressure.

We remind you briefly a conversion relationship between pressure measuring units:
1 bar = 100 000 N/m2 = 1.01972 x 10000 kgf/m2 = 1.01972 at (kgf/cm2) = 0.98692 atm = 750.06 torr (mm Hg)

Digital thermo-hygrometers for inside and outside

We offer you variants of digital thermo-hygrometers for monitoring the temperature and humidity conditions inside and outside.

Depending on the Maximum/ Minimum, sensor for out-door with 3 m cable, range from -50 to 70 degrees Celsius, 0 to 100 % RH, magnetic clip for on-wall mounting, code 681067938. Contact us!

Hand pumps

In order to extract liquids from canisters, barrels it is helpful to use hand pumps with either bulb or piston, made from various materials depending on the corrosiveness of the liquid; we can tell you that a hand pump OTAL (Germany) with bulb, for an immersion depth of 90 cm, at a capacity of 26 l/ min costs approximately 160 euro.

Duran glass

Why is DURAN glass so special?

DURAN® is the world-wide standard for borosilicate glass 3.3 (DIN/ISO 3585).

Its characteristics include maximum chemical resistance and high thermal resistance.

The quality of the laboratory glassware of this trademark is given by the material (in other words by the glass and the glass type) but also by the way the glass is processed during the production process. This affects the characteristics of each glass piece. Having a uniform wall thickness on the entire piece (ex. an Erlenmeyer flask) the improvement of the physical stability and, above all, the thermal shock resistance are ensured. The maximum work temperature with DURAN® is of 500 degrees C.

Starting with January 2004 all laboratory glassware SCHOTT DURAN® is imprinted with an 8-digit batch number proving the traceability of that reference from the producer to the user. With this number (Retrace Code) and with the SCHOTT product use, any user can quickly obtain on the internet a quality certificate per batch (

Warning labels for Toxic and Very toxic

Even though the decree 466/79 regarding adhesive the regime of the toxic substances has been abrogated, it is useful to label the place where you keep such substances with warning labels for toxic and very toxic. In this respect we propose you self-adhesive labels with skull, explosion hazard, inflammable etc. Sizes:
– 18×26 mm (one sheet with 30 pieces);
– 26×37 mm (sheet with 12 pieces).

Fire blankets

We recommend you the fire blanket for laboratories; the asbestos fabrics are not fashionable anymore, asbestos is avoided due to health reasons; the blankets offered by us are made of glass fibre, are especially thermally insulated, nice at skin contact and non-toxic. They have two places in which they can be grabbed and quickly unfolded when needed. Dimensions 1600×2000 mm, compliant with EN 1869.


NutriDisks are alternatives to the traditional Agar plates. The selective determinations and counting of the colonies are performed more easily with these NutriDisks.

A cellulose disk is impregnated with a dehydrated base nutrient which, after being humidified with sterile distilled water becomes a proper nutritive medium for a micro-organism to be analysed.

NutriDisks are delivered without membrane giving you the possibility of choosing the membranes you consider appropriate.

NutriDisks are available in a wide range of nutrient solutions, for a wide application range, which cover all ranges of microbiological analysis. They are sterile, ready-to-use and valid (at room temperature) for one year; they are packed in Petri box, 10 x 10 pieces.

Example: Standard TTC-NutriDisk, code 10434164 (filtering membrane recommended by ME 25/41, green, gridded, 0.45 microns), for colonies in water, with triphenil tetrazolium chloride. Incubation conditions 48-72 hours at 20 degrees or 48 hours at 30 degrees.