Lauryl Tryptose (LST) Broth is used for the detection of coliform bacteria in water and wastewater. Lauryl Tryptose Broth is not intended for use in the diagnosis of disease or other conditions in humans. Lauryl Tryptose Broth is a selective medium for the detection of coliforms in water, dairy products and other foods. The American Public Health Authority (APHA) recommend Lauryl Tryptose Broth for the Most Probable Number Presumptive Test of coliforms in waters, effluent or sewage and as a confirmation test of lactose fermentation with gas production from milk samples and for the detection of coliforms in foods. Lauryl Tryptose Broth is prepared according to the formulation of Mallmann and Darby. Mallmann and Darby showed that tryptose at a concentration of 2% increased the early logarithmic growth phase when compared to meat peptone.

These researchers added phosphate buffers and sodium chloride, which improved gas production by "slow lactose fermenting" organisms. Sodium lauryl sulfate was incorporated as a selective agent for the inhibition of non-coliform organisms. This medium can also be used with the addition of MUG (4- methylumbelliferyl-β-D-glucuronide) according to the ISO Standard 11866-2 to give enhanced detection of Escherichia coli.

• Eyepiece Tubes - Viewing angle of 30°, 22 mm Field of View with interpupillary distance adjustable between 50-75mm
• Eyepieces - Infinity Corrected CCIS® Optics with a field flatness up to 22mm and the high eye point ensure true colour and sharp images and minimise eye fatigue and strain
• Objectives - New class of EC-H optics for Bright Field and Phase Contrast incorporate multi-layer coated glass for enhanced contrast and spherical aberration correction to significantly improve field flatness and improve resolution
• Stage - New Rackless low position coaxial mechanical stage with sample holder and ceramic insert. Mechanical travel range from 80 x 55 mm
• Light features: Auto-OFF and Light Memory function
• Illumination - Externally mounted lamphouse, 12V/50W Quartz Halogen Koehler illumination with intensity control. A 12V/100W Koehler system is also available
• Phase Contrast & Darkfield –Options include a slider solution or a turret condenser for more advanced Phase contrast demands
• Polarisation - Polarisation can be achieved using 2 slots in the upper part of the stand which can accommodate a rotatable analyser, retardation plate (First Order Red Compensator) and a polarizer placed on top of the collector
• Fluorescence – Easily upgradeable to an EPI-Fluorescence microscope by using the fluorescence attachment which can carry up to 4 filter cubes. A complete range of filter cubes is available, covering all routine applications from UV up to NIR

• Slide Format: Large Pushfit
• Agar (Side 1): Tsa
• Detection (Side 1): Total Count
• Agar (Side 2): Pseudomonas
• Detection (Side 2): Pseudomonas
• Shelf Life: 9 Months
• Storage Temp.: 8 - 15℃
• Incubation: 35℃ - 24 - 48 Hrs
• Minimum Order Quantity: 10 boxes

• Aurora Scientific 1000mL Clear PET (Polyethylene) Bottle with White HDPE Cap - Irradiated
• Box of 52

• Triple layer for maximum robustness and durability
• High sight line of 857 mm (33.7”) for enhanced visibility.
• Sash Angled Front with a 5° slope minimizes glares and reflections and allows users to work further into the hood without strain
• The unique Hot Zone Baffle design draws most contaminants back in single pass displacement of the air - thermal heat relief is quickly achieved.
• Multiple worktop options allow more applications to be done, standard worktop is phenolic resin options include: Epoxy resin, Ceramic, SS 304, SS 316
• Isocide™ Antimicrobial Powder Coating eliminates 99.9% of surface bacteria within 24 hours of exposure