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Microscope slides, Coverglass, Cyrovial Tubes, PCR series, Sample collection tubes, Culture dishes and Accessories, Glass labware.
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All our products are widely used in the field of Laboratory, Cytology, Histology and Biotechnology Researching.
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The products of Alfine are exporting to European and American markets, South America, and main countries of Asia and Africa.
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Our products are stable quality based on Over 10 year's continuous practice and improvement, including the best service make us reliable to all the customers.
What is Slide Staining?
A slide stainer is crucial in histology and pathology because it is highly meticulous in automating microscope slide staining. This tool uses dyes such as hematoxylin and eosin to accentuate cellular structures precisely.
The Process Of Slide Staining
Preparing: Affix the tissue specimens to a slide, which goes into a slide holder.
Loading: Insert the slide holder into the stainer and program the device to the desired staining protocol.
Staining: The slide stainer takes over and applies the staining reagent, such as dyes or antibodies, to the slides.
Timing: The slide stainer precisely controls each step's duration, ensuring precision and consistent results.
Washing: The slide stainer rinses any excess stain or reagent to ensure a clear specimen.
Drying: Certain slide stainers also include a drying step that removes any moisture that could impair your analysis.
Covering: Once completed, remove the slides from the stainer and cover them with the protective coverslip.
Increased throughput: You experience accelerated workflow as it can process larger quantities of slides at a time.
Precision and consistency: A machine offers consistency based on its setting, leading to reduced variations.
Improved results: Automation can provide better staining qualities, offering quicker and more accurate analysis.
Time-saving: Pathologists and lab assistants can focus on core work instead of repetitive tasks.
Increased control and flexibility
Pathologists and technicians can work with a broader range of specimens and completely control the process and the techniques they employ.
Cost saving
Manual staining saves you the upfront cost of a slide stainer and could reduce lab reagent consumption. There are also no maintenance or repair costs involved.
Space saving
Manual staining kits suit various lab sizes as they are compact and do not require a dedicated space.
How To Microscope Slide Staining?
1、 Cleaning the slides
How to stain microscope slides:
Staining microscope slides is an essential step in preparing samples for microscopic examination. Here are the steps to follow:
1. Clean the slides: Before staining, it is crucial to ensure that the slides are clean and free of any debris or contaminants. Cleaning the slides can be done by washing them with soap and water, followed by rinsing with distilled water and drying with a lint-free cloth.
2. Prepare the sample: The sample to be examined should be prepared and placed on the slide. This can be done by placing a drop of the sample on the slide and spreading it evenly using a sterile pipette or a spreader.
3. Choose the appropriate stain: There are various types of stains available for different types of samples. The most commonly used stains are hematoxylin and eosin (H&E), which are used to stain tissues and cells.
4. Apply the stain: The stain can be applied by placing a few drops of the stain on the sample and leaving it for a few minutes. The excess stain can be removed by rinsing the slide with distilled water.
5. Mount the slide: Once the staining is complete, the slide can be mounted with a cover slip using a mounting medium.
2、 Choosing a stain
How to stain microscope slides:
Staining microscope slides is an essential technique in microscopy that enhances the contrast and visibility of cells and tissues. Here are the steps to follow when staining microscope slides:
1. Prepare the slides: Clean the slides with alcohol and let them dry. Place the specimen on the slide and let it air dry.
2. Choose a stain: There are various types of stains available for different purposes. Some of the commonly used stains include hematoxylin and eosin (H&E), Giemsa, and Wright's stain. The choice of stain depends on the type of specimen and the information required.
3. Apply the stain: Follow the manufacturer's instructions to prepare the stain solution. Apply the stain to the specimen and let it sit for the recommended time. Rinse the slide with distilled water to remove excess stain.
4. Mount the slide: Apply a mounting medium to the slide and cover it with a coverslip. Seal the edges with nail polish or a commercial sealant.
3、 Preparing the stain solution
How to stain microscope slides:
Staining microscope slides is an essential technique in microscopy that enhances the contrast and visibility of cells and tissues. Here are the steps to follow when staining microscope slides:
1. Prepare the slides: Clean the slides thoroughly with soap and water, rinse with distilled water, and dry them with a lint-free cloth.
2. Prepare the specimen: Collect the specimen and prepare it for staining. This may involve fixing the specimen with a fixative solution, such as formalin, to preserve its structure.
3. Preparing the stain solution: There are various types of stains that can be used to stain microscope slides, including hematoxylin and eosin (H&E), Giemsa, and Gram stain. Each stain has a specific protocol for preparation. For example, to prepare a H&E stain, mix hematoxylin and eosin solutions in the appropriate ratio and filter the solution before use.
4. Staining the slides: Place the prepared specimen on the slide and add the stain solution. The staining time varies depending on the type of stain used. After staining, rinse the slide with distilled water and dry it with a lint-free cloth.
5. Mounting the slides: Apply a mounting medium, such as a coverslip, to the slide to protect the specimen and prevent it from drying out.
4、Applying the stain to the slide
How to stain microscope slides is a crucial technique in the field of microscopy. Staining is used to enhance the contrast of the specimen, making it easier to visualize under the microscope. There are various types of stains available, each with its own specific purpose. Some stains are used to highlight specific structures or organelles, while others are used to differentiate between different types of cells.
Microscope Slide Staining Information
Microscope cell staining is a technique used to enable better visualization of cells and cell parts under the microscope. By using different stains, a nucleus or a cell wall are easier to view. Most stains can be used on non-living (fixed) cells, while only some types of stain can be used on living cells.
Bismarck Brown - Colors a type of protein called acid mucins yellow. LIVE.
Carmine - Colors animal starch (glycogen), red.
Coomassie Blue - Stains proteins a bright blue, and is often used in gel electrophoresis
Crystal Violet - Stains cell walls purple when combined with mordant. This stain is used in Gram Staining.
DAPI - A fluorescent nuclear stain that is excited by ultraviolet light, showing blue fluorescence when bound to DNA. LIVE.
Eosin - A counterstain to haematoxylin, this stain colors red blood cells, cytoplasmic material, cell membranes, and extracellular structures pink or red.
Ethidium Bromide - This stain colors unhealthy cells in the final stages of apoptosis, or deliberate cell death, fluorescent red-orange.
Fuchsin - This stain is used to stain collagen, smooth muscle or mitochondria.
Hematoxylin - A nuclear stain that, with a mordant, stains nuclei blue-violet or brown.
Hoechst Stains - Two types of fluorescent stains, 33258 and 33342 are used to stain DNA in living cells.
Iodine - Used as a starch indicator. When in a solution, starch and iodine turn a dark blue in color.
Malachite Green - A blue-green counterstain to safranin in Gimenez staining for bacteria. This stain is often used to stain spores.
Methylene Blue - Stains animal cells to make nuclei more visible.
Neutral/Toluylene Red - Stains nuclei red. LIVE.
Nile Blue - Stains nuclei blue. LIVE.
Nile Red / Nile Blue Oxazone - This stain is made by boiling Nile Blue with Sulfuric Acid, which creates a mix of Nile Red and Nile Blue. The red accumulates in intracellular lipid globules, staining them red. LIVE.
Osmium Tetroxide - Used in optical microscopy to stain lipids black.
Rhodamine - A protein-specific fluorescent stain used in fluorescence microscopy.
Safranin - A nuclear stain used as a counterstain or to color collagen yellow.
Slide staining steps
The standard steps for slide staining include smearing, drying, fixing, staining, washing and microscopic examination. These steps ensure uniform coating of the sample, proper drying and fixing, and effective staining, so that the details of the sample can be clearly observed under the microscope. The following are detailed step-by-step instructions.
Smear: Drop a drop of sterile distilled water in the center of the slide, then use a sterile inoculation loop to pick up an appropriate amount of bacterial moss from the slant and mix it with the water drop, and spread it into a uniform thin layer.
Drying: Let the smear dry naturally at room temperature, or carefully heat it slightly on an alcohol lamp to accelerate the drying process.
Fixation: Use high temperature to quickly pass through the alcohol lamp flame 2 to 3 times to fix the cell morphology and kill the microorganisms, while ensuring that the bacteria can adhere more firmly to the slide.
Staining: Add staining solution to cover the smear and keep it for about 1 minute to allow the dye to penetrate the cells. For Gram staining, this includes multiple stages such as primary staining, mordant staining, decolorization and counterstaining.
Washing: Rinse the slide with a small stream of water until the water is colorless to remove unfixed dye.
Drying: Finally, let the smear dry naturally, avoiding the use of heat sources to avoid affecting the morphology of fixed cells.
How is Automatic Slide Staining done?
The automation of the staining of slides is a fundamental tool in laboratories that need to increase the performance of their studies. This equipment performs standardized staining schedules, and allows laboratory personnel to save time. Also, general microbiology and histology laboratories, which seek to reduce the sample staining workload, will benefit greatly from its use. Up to 20 microscope slides are loaded into the computer’s basket.
General Functions
The automated sample dyeing equipment has a robotic mechanism, similar to an electronic arm, where it is immersed and stirred in several interchangeable plastic wells, to perform the proper dyeing. The slides are bathed in recycled water, ensuring that it is renewed after rinsing each basket, where the slide is. In addition, the equipment has slides that are dried with or without heat, and its operation is simple through a single button, which triggers the whole staining procedure.
It should be noted that most tissues are colorless, and therefore need to be stained to observe their morphological characteristics with the optical microscope. This is obtained with the use of dyes or colored substances, which are prepared to bind, more or less specifically to tissue structures providing color. These stains are generally made on tissue sections, being the most used sections obtained from paraffin inclusions or obtained in the cryostat.
Slide Staining Method
The mechanisms for staining slides are done in order to avoid manual processes, by laboratory technicians, who inevitably make diagnoses with a lot of versatility, and require extensive and exhausting work. As a result, errors can be made in the staining process, in counting, and in subsequent diagnosis. Also, because this process is done artisanally, there is a high risk of contagion from medical personnel and laboratories.
Therefore, the automated system for medical diagnosis is presented as a solution to correct errors present in human intervention, providing the robotic mechanisms of the equipment, in order to standardize the staining process of slides.
It is also important for laboratories to have an automated slide staining equipment capable of providing solutions to present problems and to be part of a complete automated diagnostic system. Thanks to its flexibility, it allows the simultaneous staining of several baskets with the same or different staining protocols, depending on the programs, load frequency and configuration of the equipment, transforming it into a portable analysis tool, demanded in the country’s health centers.
Jiangsu Alfinemed Instruments Co., Ltd is experienced and specialized in medical disposables and laboratory consumables. Our products are stable quality based on Over 10 year's continuous practice and improvement, including the best service make us reliable to all the customers.
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