The tamper-proof samples clamp of the invention includes a holder section that is foldable into a pair of substantially parallel spaced clamp elements having apertures which, when the clamp elements are in their parallel relationship, are in alignment. At least one pin element projects from one of the clamp elements and possesses sufficient stiffness such that it can penetrate the material of samples positioned between the clamp elements. Self-locking fasteners are provided that are dimensioned ...

An apparatus comprises a source of penetrating radiation, a detector for that radiation, a sample container, and a stage between the source and the detector for supporting the sample container, wherein the sample container includes a data storage element and the apparatus includes a reader for that data storage element, the reader being connected to a control means adapted to control the apparatus on the basis of the content of the data storage element. Thus, by including information in the data...

Test apparatus comprising means for holding a sample to be tested, means for altering the strain in the sample, an optical arrangement for monitoring the sample to be tested, and processing means for processing the signals resulting from the monitoring of the sample under test, wherein the environment between the optical arrangement and the sample under test is controlled, and wherein the sample to be tested is located in a position external to the controlled environment.

An arrangement for the withdrawal of samples from a flow of harvested crop flowing in a conveying channel in a harvesting machine includes a guide element mounted so as to cover a sample withdrawal opening provided in a wall of the channel. The guide element is mounted for movement between a first position wherein it blocks the withdrawal opening, and in a second position wherein it opens the withdrawal opening and includes a region that is inserted into the conveying channel so as to forcibly d...

A method of and apparatus for testing a sample of particulate material, for example, flour by the use of a Near Infra-Red Reflectance Spectrometer, which includes permitting the material to fall freely into a trap having an openable and closable top and bottom whereby sample material caught in the trap may be tested, means being provided for purging the trap between samples.

A method of monitoring the surface of a sample under test is provided and the method comprises the steps of: illuminating the surface with light (20) polarised in a first direction; viewing light reflected from the surface through a polarising filter (27) arranged at 90.degree. to the first direction, wherein the surface of the sample under test is provided with a marked area where diffuse reflection of the incident polarised light will occur in order to improve the contrast between the marked a...

The invention relates to an apparatus for taking and analysing liquid samples, such as blood samples, wherein a liquid, absorbed by a porous material, is analysed optically. The apparatus, according to the invention, comprises a store (2) for measurement strips that receive samples and have been interconnected so that they can be disconnected, the store having a compound construction, a measurement strip feeding mechanism (3) and a blood analyzer (4). The apparatus has preferably been integrated...

The invention relates to a method for collecting a blood sample from a blood vessel, such as an artery, by means of a syringe, preferably of the type having a piston displaceably mounted within a cylinder which is provided with a hollow needle. Before the needle is inserted in the blood vessel from which the blood sample is to be collected the piston is displaced to a retracted position, and the cylinder space defined by the piston is vented to the atmosphere. The invention also relates to a blo...

A carpet sample rack to carry and display rectangular carpet samples. The display can include pattern samples and smaller color samples. The color samples are one-half or one-third as wide as the pattern samples so that two or three color samples will occupy the same space as a pattern sample. The rack is, essentially, a rectangular, open frame having upright sides which are spaced apart to carry a pattern sample. A vertical array of spaced holes is provided in these sides to receive locking sna...

A tube having therein spaced layers of particled activated charcoal, one layer being between air-permeable blocks of poly-urethane foam and the other between one of the blocks and a mass of glass wool. To minimize irregularity in the flow of air through the tube the quantity of glass wool is a minimum, just sufficient to cover the layer. The glass wool is engaged by a U-shaped spring with diverging legs which secures the glass wool, layers and blocks firmly in place and prevents movement of part...