Best Biological Facemask

Roebic CA-1 Bacterial Compost Accelerator, 2.5 LBS

(9 Pack) Fluval C4 Bio-Screen - 3 Packages with 3 Screens per Package

• 3 Pack Of Fluval C4 Bio-Screen - with 3 Screens per Package..
• Evenly distributes water flow into the C-series Trickle Chamber for additional biological filtering..

Aquascape 29082 UltraFalls Skimmer Filter Mat for Pond Water Feature Waterfall Landscape and Garden by Aquascape

• Replacement filtration for standard-sized Aquascape Pond Filter Urn.
• Ceramic beads provides biological filtration.
• Filter mat provides mechanical filtration.

Zoo Med Turtle Clean External Canister Filter, 50-Gallon

• External canister filter with slimline design for tight spaces.
• 200 gallon per hour rating, ideal for turtle habitats up to 50 gallons in size.
• The included spray bar increases oxygenation to help support your turtles' health.
• Double filtering system with both carbon and ceramic filters and internal biological recirculation.
• Combines mechanical, biological, and chemical filtration to give your pets the cleanest, healthiest habitat.

Fluval Foam Filter Block A226 - For 404/405/406 12-Pack - Retail OEM

• Biological and mechanical aquarium filtration.
• Designed specifically for Fluval 404/405/406 canister filters.
• This media is suitable for use in both freshwater and saltwater aquariums.
• Traps waste and debris from your fish tank's water and maximizes biological filtration while maintaining even flow.

Koolertron Compound Monocular Microscope 40X-1280X Biological Microscope All-Metal Optical Glass Lenses,with Mechanical Moving Platform,Microscope Slides Set,LED Light,Body Microscope for Beginners

• 【High Magnification Compound Microscope】 3 Achromatic objectives (4X, 10X, 40X) mounted in a revolving turret and 2 Eyepieces (wide field WF10X and WF16X),2x Barlow lens.Biological Microscopes fixed 45-degree vertical inclination to reduce eye and neck strain.This biological microscope is designed to help.
• 【Fine Focusing and Metal Body】Monocular Microscopes with solid metal frame and coarse/fine focusing knobs, ensures detail and precise focus adjustment, create a image more clearer and sharper. A 1.4 NA single-lens condenser with disc diaphragm,ensure to be easy to adjust the focus and create a image more clearer and sharper.Suitable for kids who are elder than 6 years old..
• 【LED Illumination System】 Lab Compound Monocular Microscopes has LED with adjustable light source brightness by turning the knob,which can translucent specimens illuminated from below,it’s easy to use. According to the actual situation, adjust the light strength.It comes with experimental tools,you can make your own biological samples,which is very interesting..
• 【Moving Calipers】Our optical microscope has a mechanical moving stage with scale, you just need to turn the X and Y axis to adjust the position of the slider, making your experiments more precise and conve....

100X-2000X Microscopes for Kids Students Adults, with Microscope Slides Set, Phone Adapter, Powerful Biological Microscopes for School Laboratory Home Education

• [High Magnification] WF25X eyepiece alone or with 2X lens, cooperate 4x 10x 40x objective lenses, biological microscopes offers 6 magnification settings, 100X, 250X, 1000X, 200X, 500X, 2000X..
• [Coarse and Fine Focus] Monocular Microscopes with solid metal frame and coarse/fine focusing knobs, ensures detail and precise focus adjustment, crate a image more clearer and sharper..
• [Dual Illumination System] Top and bottom LED simultaneously brightfield, a 0.65 NA single-lens condenser with disc diaphragm, provide high-resolution color-corrected images..
• [Complete Accessories] It comes with phone adapter, wire shutter, 10 operating accessories, 15pcs microscope slides set, carrying bag. Meet all your biological observation need..
• [Practical Educational Tool] This 100X-2000X biological microscope is designed to help students/kids/adults/beginner/amateur scientist/hobbyists exploring the fantastic world of the life. It is ideal for school,laboratory or home teaching, one-on-one instruction..

MarineLand Carbon Bag 12/4 CT AQ-78235

• Premium clarity: reusable bags hold biological media and bacteria cultures that support healthy water..
• Compatibility: fits MarineLand Penguin and emperor Pro Filter media baskets and most external filters and canister filters..
• Easy maintenance: Simply dispose of old media and rinse reusable bag clean..
• Versatile: designed to hold a variety of media, including K2 biological media for beneficial bacteria in both saltwater and freshwater aquariums..
• MarineLand Filtration products: MarineLand products are designed with both performance and style in mind..

Aquarium Cover Glass for 5-1/2-gal Tank

• Important Note: This cover fits only 5-1/2 gal Aquarium Tank (item #671228) sold by Carolina Biological Supply.
• 5-1/2-gal aquarium cover is hinged glass and plastic, and it can be used in conjunction with item Carolina Biological Supply item #671228: Aquarium....
• Aquarium cover dimensions: 15-1/4 x 7-1/2".
• When you shop with Carolina, you're not alone! All of our products are backed by unparalleled technical support, available from 8am to 8pm, ET,....

MarineLand Penguin 350 Power Filter 50 - 75 Gallon Aquarium, 350 GPH

• WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration..
• MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment..
• COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations)..
• FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes..