Quelle méthode employer pour vérifier un spectrophotomètre Hach Lange LASA 100?

High Precision in Spectro-Optics Product Catalog BestCellers CELLS TRAYCELL ® MICRO VOLUME ANALYSIS CERTIFIED REFERENCE MATERIALS OPTICAL IMMERSION PROBES & FIBER OPTIC CELLS OPTICAL COMPONENTS FOR UV/VIS/NIR SPECTROSCOPY MADE IN GERMANY 3 2 www.hellma-optics.com www.hellma-materials.com YOUR PROCESS. OUR SOLUTIONS. As a leadin\f supplier of h\ni\fh-precision, optical solutions that a\nre \bMade in Germany\b \nfrom \flass, quartz \flass and synthetic cry\nstals, Hellma has bee\nn a by-word for outstandin\f quality for more than 95 years. A key supplier, the company is an inte\fral part of its clie\nnts’ value chains. Reliab\nility, trust and continuity are inherent to Hellma’s work, and the company believes it has both a d\nuty and responsibility to ensure these principles are upheld. Clients w\norldwide put their\n confidence in Hellma’s exceptional level of performance and problem-solvin\f skills to meet and exceed re\fulatory requirements and to make their products safer. Hellma Analytics for OPTICAL ANALYSIS WITH THE HIGHEST PRECISION  Optical components and assemblies for use in systems that serve analytical technology. Premium-quality preci- sion optics for use in laser technology as well as all areas of photonics and the optical industry. High-quality synthetic crystals for use in the fields of microlithography, optics, laser technology and radiation detection. 5 4 WHERE ONLY THE BEST QUALITY WILL DO HOW TO REACH US Select your local distribution partner: www.hellma-analytics.com/contacts All-round expertise – from materials to custom solutions From raw materials to component manufacturing and from specific technological knowledge to certifica tion, Hellma offers a unique range of products and technologies for collecting exact and reliable results in the field of optical analysis. Extensive engineering prowess, consulting skills and services complement our work. While our compre - hensive portfolio means we have the right products at our fingertips to suit a wide variety of requirements, we are, of course, also able to produce customized solutions tailored precisely to your needs. Please don’t hesitate to contact us – we’re always happy to help. IMPORTANT: Please check your order for completeness with re\fard to the followin\f points Article number Quantity needed Transmission matched........yes/no Polarimetric certification....yes/no Antireflection or reflective coatin\fs, if required............yes/no Hellma Analytics products and solutions This product catalog lists our com- prehensive range of products and solutions – from cuvettes for spectro- scopy and cytometry to micro volume analysis technology, certified reference materials for spectroscopy, and optical immersion probes for use in laboratories. 7 6 Accurate measurements \fuaranteed Founded on more than 95 years of experience in glass pro - cessing, Hellma Analytics provides an impressive range of services when ever hi\fh-precision, innovative optics are needed for use in analysis. From proven, standard hi\fh- precision products to complex, technolo\fically advanced custom-built desi\fns, we offer our clients a comprehen- sive ran\fe of services and solutions for collecting reliable and exact results. Batch-produced OEM products Besides our extensive collection of standard products, we also manufacture custom products accordin\f to client specifications. Our state-of-the-art production facilities and in-depth specialist knowledge enable us to make the seemingly impossible – possible. We are always on hand to provide detailed, expert advice to help make your ideas a reality. Please don’t hesitate to contact us. UNIQUE TECHNOLOGICAL EXPERTISE FOR EXACT MEASUREMENT AND PRECISE RESULTS Optical path length tolerance is a particularly important parameter for photometric applications be - cause it influences the accuracy of the measurements and preci- si on of the results. These tight tolerances make Hellma Analytic s products ideally suited for coll- ecting reliable and reproducible results. An original Hellma Analytics product can be identified from the material code on each cuvette. When comparing the transmis- sion values of various cuvettes, it is essential to ensure that the same measurement conditions are in place. Please note that the transmission curves shown were plotted using measurements taken from empty cuvettes (2 windows). OPTICAL PATH LENGTH TOLERANCES MATERIAL CODES TRANSMISSION OF EMPTY CELL\nS MADE OF DIFFEREN\nT MATERIALS These optical path length tolerances apply to absorption cells. For fluorescence cells, both for the direction of excitation and emission the tolerance is ± 0.05 mm. Wa venumber (cm -1) Wa velength Quartz Glas s 66667 50000 40000 33333250005000 333325002000 Optical Glas s Special Optical Glas s Borosilicat e Glass Quartz Glas s High Perf ormance Transmission (%) 90 200 150 2503004002000 300040005000 100 80 70 60 50 40 30 20 10 Quartz Glass Extended Range MATERIAL OPTICAL PATH LENGTH TOLERANCE Quartz 0.01 mm to 0.05 mm ± 0.003 mm Quartz 0.1 mm to 0.2 mm ± 0.005 mm Quartz 0.5 mm to 20 mm ± 0.01 mm Quartz 30 mm to 100 mm ± 0.02 mm Special Optical Glass 0.1 mm to 10 mm ± 0.01 mm Special Optical Glass 20 mm to 100 mm ± 0.03 mm Optical Glass 10 mm to 20 mm ± 0.05 mm Optical Glass 20 mm to 100 mm ± 0.1 mm INFORMATION ABOUT THE MATERIALS www.hellma.com/technical-info MATERIAL MATERIAL CODE WAVELENGTH REFRACTIVE INDEX n d AT 588 nm Optical Glass ■ OG ■ 360 nm – 2500 nm 1,523 Borosilicate Glass ■ BF ■ 330 nm – 2500 nm 1,473 Special Optical Glass ■ OS ■ 320 nm – 2500 nm 1,523 Quartz Glass ■ UV ■ 260 nm – 2500 nm 1,458 Quartz Glass Hi\fh Performance ■ QS ■ 200 nm – 2500 nm 1,458 Quartz Glass Extended Ran\fe ■ QX ■ 200 nm – 3500 nm 1,458 9 8 Cuvettes for absorbance and fluorescence measurements Hellma Analytics produces a wide range of cuvettes for use in spectroscopy and cytometry with optical path lengths spanning 0.01 mm to 100 mm and above. Thanks to their stability, maximum precision and reliability when used for absorbance and fluorescence measurements, Hellma cuvettes work exceptionally well in a wide range of areas in the lab. With a surface flatness of 1 μm, our quartz wi\nndows set a benchmark \nin cuvette production. What’s more, the function-optimiz\ned desi\fn with beveled edges and corners protects against the risk of damage caused by splitting and assists users in their daily work. On request, we are able to produce custom models designed for specific areas of application. Measurin\f of cuvette transmission If required, cuvettes can be spectrally calibrated into sets with equal transmission values (measurement uncertainty ±1%). These cuvettes are given a three-digit calibration code containing coded data about the material and the transmission at a wavelength typical for the cuvette material. Polarimetric checki\nn\f of cuvettes Cuvettes with an inside width greater than 5 mm can be polari metrically checked on request. They are marked with a “P” and delivered with a test certificate confirming that the rotation of the polarization plane does not exceed 0.01 degrees. ADVANTAGES ● Extremely hi\fh parallelism of the windows with a maximum tolerance of ± 0.01 mm ● Exceptional optical path len\fth accuracy down to 0.003 mm (3 µm) for high dimensional accuracy and reproducible measurements results ● Unique surface flatness of the optical windows of 0.001 mm (1 µm) ● Very high temperature stability and chemical resistance due to thermal bonding of individual components (effectively monolithic) ● Guaranteed transmission of at least 82% from 200 nm to 3500 nm depending on the material CELLS FOR RELIABLE MEASUREMENTS COLLECTED WITH UTMOST PRECISION HIGH-PRECISION QUA\nRTZ CUVETTE, TYPE 1\n00-QS Tried and tested over decades, used in countless applications Utmost accuracy in terms of optical path len\fth and parallelism Very hi\fh temperature resistance Very hi\fh chemical resistance Outstandin\f measurement reproducibility Developed usin\f our spec\nialist expertise, Hellma cu\nvettes stand out for their excellent quality. Thomas Brenn, Product Manager Cuvettes CUVETTE FINDER If you cannot find the right product in the following selection, please use our online cuvette finder. www.hellma.com/cuvette-finder  11 10 DECISIVE STRENGTHS OF HELLMA ANAL\nYTICS CELLS Cuvettes are not all the same, even if they sometimes appear identical. The difference lies in the details and can be crucial for measurement results. Take our cuvette windows, for example, which boast outstanding quality and a flat- ness tolerance of better than 0.001 mm (1 μm). The parallelism of both window surfaces relative to one another is just as important. Our high-precision production guarantees that the frontal deformation of the light wave passing through a cuvette window is less than 4 lambda, which works out at approximately 0.001 mm (1 μm) if \nlambda = 546 nm. The high level of flatness demonstrates that the cuvettes from Hellma Analytics are setting standards. Overall, an ideal foundation for conducting reliable, reproducible and exact measurements. UV/VIS/NIR SPECTROSCOPY PERFECTION IN DETAIL Fi\fure 1: Measurement of the flatness of a Hellma cuvette - the frontal deformation of the wave is extremely low. Fi\fure 2: Measurement of the flatness of a competitor&