Digital Video Database

Digitize Your Lecture

Create a custom DVD to accompany your lab manual. Our DVD database includes video on lab safety, microscope use, Gram staining, pH testing, pipetting, diffusion and osmosis, respirometer use, and more. Video clips can be combined in any order to match your lab manual, or customized with new video created just for you. Adding content to existing DVD material or writing new DVD script can earn you, your department, or your school royalties. The professional videographers at Bent Tree Press can shoot video at your location, or use our biologists to shoot video for you—all at incredible cost-saving pricing!

VIEW CLIPS OF OUR DVD VIDEOS:

Microbiology

  • Lab Safety
    Covers basic lab safety, including use of fire extinguisher and fire blanket, location of First Aid kit, use of eyewash station, disinfection of workstation, disposal of sharp and contaminated materials in the SHARPS and biohazard containers, and location of MSDS information.
  • Parts of the Microscope
    Identifies and discusses uses of the ocular eyepieces, diopter ring, rotating nosepiece, objective lenses, stage, condenser, condensure apeture diaphragm, daylight filter, base, light source, X & Y travel controls, fine and course focus knobs, arms, and power switch.
  • Use of the Microscope
    Shows proper transport and setup of microscope, cleaning of ocular and objective lenses, placement of slide, magnification, adjustment of eyepiece plates, proper focusing procedure, and oil immersion viewing and focus, as well as microscope cleanup and storage.
  • Aseptic Technique
    Covers labeling a culture, turning on and adjusting the Bunsen burner, flaming the loop, transferring organisms from a broth, and inoculating an Agar slant.
  • Smear Preparation
    Demonstrates the steps in making a bacterial smear from both broth and Agar, including aseptic technique for obtaining and transferring bacteria to a slide, drying a slide, and properly heat-fixing a slide.
  • Simple Stain
    Shows how to stain a prepared slide and provides examples of how a correctly stained slide looks under oil immersion, as compared to stains that are too thick or too thin. Discusses how to avoid sampling error, and provides examples of proper interpretation of a stain.
  • The Gram Stain
    Provides history of the Gram stain and discusses positive and negative results obtained from the procedure. Shows the 4 reagents used in the Gram stain, and discusses their roles in the staining process, as well as how to avoid sampling error. Demonstrates the steps of the staining procedure and shows examples of correctly stained slides, as well as interpretation of slides.
  • Streak Plate Technique
    Discusses reasons for using dilution technique and shows labeling, T-streaking, examples of properly and improperly streaked cultures, and how to avoid sampling error.
  • Serial Dilutions Using Serological Pipettes
    Shows the setup and labeling of test tubes, aseptic technique for obtaining a pipette, attaching a pipetting device, aspirating liquid, filling test tubes with water and broth, mixing and serial transferring of liquid from one tube to another, and disposing of used pipettes. Shows labeling of sterile Petri dishes, transferring broth from test tubes to culture dishes, and steps in proper spread plate technique.
  • Serial Dilutions Using Micropipettors
    Shows setup and labeling of microcentrifuge tubes, and micropipetting of water and broth into each tube. Demonstrates mixing and serial transferring of liquid from one tube to another. Shows labeling of sterile Petri dishes, transferring of broth from test tubes to culture dishes, and proper spread plate technique.

Biology

  • Using the Computer
    Shows how to turn on the Apple eMac computer, log in, and gain Internet access. Discusses how to obtain course information and use weekly links buttons for Web-based lab information. Shows how to turn off the computer at the end of lab.
  • Safety
    Discusses lab safety rules for food and clothing, lab procedures for backpacks and phones, emergency phone and phone number location in the lab, as well as eyewash station location and use, First Aid kit location, fire extinguisher location and use, and biohazard material disposal.
  • Introduction to the Microscope
    Shows proper transport and setup of the microscope, and identifies the oculars, stage, objectives, course and fine focus knobs, slide clip, stage manipulators, power switch, dimmer dial, and iris.
  • Using the Microscope
    Demonstrates how to place a slide, adjust the objective lenses and eyepieces, focus under low power, increase magnification, and adjust with the fine focus. Shows proper technique for preparing the microscope for storage and transporting it back to the shelf.
  • Obsertainer
    Discusses what an obsertainer box is, where to locate the box number, and how to use the obsertainer in lab.
  • Cheek Cell Preparation
    Shows how to clean and prepare a microscope slide, apply methylene blue dye, obtain a cheek cell scraping, apply a coverslip to avoid bubbles, dispose of the used coverslip, and clean and store the slide for future use.
  • pH Testing
    Discusses pH and the pH scale, and shows how to test a sample and read a pH strip.
  • Cell Chemistry: The Test for the Presence of Starch
    Demonstrates how iodine reacts with starch in a potato, and shows how to prepare test tubes and unknowns for the presence of starch and two other biomolecules. Shows how to setup and conduct the experiment for the starch assay and how to perform the Benedict’s test for sugar and the Biuret test for protein.
  • Enzymes
    Shows how to prepare and label a spot plate for the amylase enzyme test. Demonstrates how to add iodine to each well and test for starch breakdown in the wells over time. Shows how to time and take samples and read results, including negative and positive controls. Discusses variation in results due to heating, cooling, diluting, or changing pH.
  • pH Effect on Enzymes
    Shows the effect of exposing the enzyme amylase to acid, and demonstrates the spot plate test with the altered enzyme.
  • Diffusion and Osmosis
    Discusses the movement of molecules by diffusion and osmosis and demonstrates the effect with red dye, water, and temperature. Demonstrates how to prepare dialysis tubing with soaking, folding, clipping, and filling. Shows how to tare the dialysis tubing and perform the experiment.
  • Cellular Respiration: Respirometers
    Shows how to make a respirometer by filling and inverting two differently sized test tubes. Demonstrates how to prepare three tubes for the experiment, including the negative and positive controls, by adding the yeast, water, and glucose to the tubes. Shows the instructor adding the toxic sodium azide and the addition of phenol red. Demonstrates inversion of the experimental respirometers.
  • Fermentation Tubes
    Demonstrates the steps for testing the effectiveness of various respiratory fuels, and shows proper technique for working with a fermentation tube.