The specifications include the provision of various equipment and techniques for the workplace for the risk assessment of historic building fabrics. Some of these are upgrades of existing systems. For example, an existing Raman/AFM device (AFM = atomic force microscopy), an IR spectrometer (IR = infrared), a GCMS system (GCMS = gas chromatography coupled with mass spectrometry) and an IR application laser system are to be updated and equipped with additional modules. Furthermore, the workplace is to be equipped with a cryosphere mill, a color-gloss-structure combination measuring instrument, an ultrasonic coating thickness gauge, a spectral fluorometer, a shore hardness measuring instrument and an ultramic microbalance for risk assessment.

The following procurement documents, including the specifications, concern the upgrading of an existing IR microscope with an ATR unit.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

The cryosphere mill to be purchased is to be used for sample preparation and preparation. In addition to grinding at room temperature, the cryosphere mill also ensures the crushing of cryogenic samples such as adhesives and sealants, as well as composite compounds or mineral substances, e.g. concrete or mortar. Furthermore, textiles or plastics can also be ground.

This type of sample preparation is intended to facilitate the possibility of analyzing historical building fabrics by gently preparing them for subsequent analyses and avoiding the loss of heat-sensitive components through the cryogenic grinding process.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

The digital ultrasonic coating thickness gauge should make it possible to determine the thicknesses of several layers on a wide variety of substrates. The ultrasound-based measuring principle is intended to enable non-invasive measurements.

This makes it possible to investigate historical building fabrics with regard to their complexity and structure in mobile use. Especially in the case of historic buildings, there may have been multiple applications of different materials on top of each other and the ultrasonic coating thickness gauge is to be used to analyze these layers with regard to their occurrence as well as their thickness.

An existing IR microscope IRT-5000 from Jasco, which is coupled to an IR spectrometer IR-6100 from Jasco, is to be upgraded with an ATR module. This upgrade allows spatially resolved measurements using ATR technology. Among other things, surface defects or aging processes on historic buildings can be examined in a spatially resolved manner. In addition, samples that are too large for the sample space of the IR spectrometer can thus be made accessible for measurement using ATR technology.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

The color-gloss-structure combination measuring device should make it possible to measure colors even on structured and/or highly shiny surfaces. Data will also be obtained from which the particle occurrence and grain sizes can be derived. The exact definition of the color values should be able to be determined, despite the gloss and a three-dimensional structure of the surface. At the same time, the gloss values, the reflectivity and the surface structure are to be recorded.

The device should be so compact and handy that mobile use is optional. The non-destructive measurement of these three factors is an important parameter in the characterization of building fabrics and the development of restoration procedures.

The Alpha300 RA Raman/AFM with microscope and VIS/NIR double spectrometer from WITec is to be equipped with a dark field lens, white light as well as Raman polarization units and two additional excitation wavelengths and the additional necessary and existing couplers are to be motorized. In addition, software for particle detection and automatic spectral acquisition including classifying evaluation options is to be integrated into the existing software package.

By means of Raman analysis, non-destructive investigation of various materials; biological, organic and inorganic as well as mixtures of these possible. The aim is to analyse historical building structures as well as possible contamination or signs of ageing and to contribute the results of the investigation both to risk assessment and to the development of repair concepts.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

By means of the Shore hardness measuring device, a wide variety of materials and materials are to be characterized for an adequate assessment with regard to their hardness properties. Since historical building fabrics and their components contain a wide range of materials and substances, a wide variety of hardnesses – from soft and gel-like (e.g. sealants) to the hardest samples (e.g. rock components) – are also expected.

The Shore hardness meter should therefore enable testing according to different Shore types.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

As part of the creation of a workplace for the risk assessment of historic buildings, a spectral fluorometer is to be purchased. This is to be used to characterize a wide variety of materials that can be found in historic buildings. For example, pigments and dyes can be examined fluorescence spectroscopically and the analysis results obtained can support the preparation of restoration plans. Fluorescence spectroscopy analysis is of great interest due to its very high sensitivity and the associated minimal amounts of sample used. This means that even with minimally invasive sampling, meaningful fluorescence spectra can be measured for corresponding building fabrics.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

As part of the creation of a workplace for risk assessment, an ultramic microbalance is required for sample preparation. The accurate weighing of even the smallest sample quantities is essential for exact analysis results. In particular, the investigations on endangered building fabrics often only allow minimally invasive sampling and require an exact weighing of the materials.

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

An up-to-date NIST GCMS database for the existing GCMS system QP2020NX with Multishot Pyrolyzer EGA/PY-3030D from Shimadzu is to be purchased. The new purchase and thus update compared to the existing GCMS database aims to fully qualify toxic flame retardants, varnishes and sealants in historic building materials. For this purpose, the latest version of the NIST GCMS database must be provided, which can be installed ready for use on the device computer (Windows 10 Pro, 64 bit operating system in compatibility with the measurement software Lab Solutions GCMS Solutions version 4.52 of the company Shimadzu or Windows 7 Professional, 32 bit operating system in compatibility with the measurement software Lab Solutions GCMS Solutions Version 4.42 of the company Shimadzu).

The compatibility of the database with the Windows operating system, the measuring system and the measurement software is essential.

Furthermore, an oil-free pump is to be purchased, which is to replace a conventional oil-powered backing pump on the GCMS system QP2020NX with Multishot Pyrolyzer EGA/PY-3030D from Shimadzu. This saves resources, as no oil has to be used for operation, as well as maintenance costs (e.g. oil change).

The requirement characteristics for the quotation are listed in the specifications and divided into sub-criteria. The offers must adhere to this structure as far as possible. Side offers are not permitted.

The low power laser system CL100 from the company CleanLASER is to be equipped with an interface for common handling/robotic systems and a scan head for the realization of three-dimensional structures and the existing software is to be updated and adapted.

By means of the IR laser system, high-spatially resolved surfaces should be able to be processed or modified with high accuracy and repeatability. As a result, the smallest areas of a wide variety of materials, such as composites, metal compounds and mineral materials can be processed.

In this way, individual layers can be removed in high spatial resolution and, for example, any contamination or signs of aging can be precisely removed from historic building fabrics. This means that underlying layers are available for further analyses. But also a targeted repair or preparation, even of small areas, are conceivable by the application of the upgraded laser system. A high and precise repeatability of the processes can contribute to the development of machining and repair concepts.