Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Ward's® AP Biology Investigation 4: Cell Processes: Diffusion and Osmosis

Avg. Ratings: 4.8 (5 Reviews)


Total Ratings: 5
Avg. Ratings: 4.8 out of 5

Sort all by:

Was this review helpful? Yes No
Yes: 1 No: 1 
Yes, I recommend
Ample supplies given for big lab groups and a great way to introduce membrane transport through inquiry
Reply associate Published 05/11/2019
Thank you for sharing!
Was this review helpful? Yes No
Yes: 0 No: 2 
Education / Educator / Portland, OR
Yes, I recommend
By far this is one of my favorite AP lab kits! Ward's has done an excellent job of providing all the materials needed for all the lab activities associated with cell membrane transport (Big Idea 2). The teacher guide and the student handouts are easy to read. I especially like having the prepared cubes for the surface area to volume ratio instead of having to make my own and the pre-measured sugar packets for the osmosis activity, which can be very messy to do it yourself. These solutions can used to do a water potential extension activity. Once you've used the kit for the first time, you only need to order the refill kit. Very nice!
Reply associate Published 05/11/2019
Thank you! We're thrilled to hear you are enjoying this kit and the easy-to-use prepared agar cubes. Thanks again for sharing!
Was this review helpful? Yes No
Yes: 4 No: 3 
Yes, I recommend
Wonderful lab - was easy to follow and the students loved it, running low on supplies this year, hoping will be able to run this lab again
Was this review helpful? Yes No
Yes: 4 No: 0 
Tampa Bay Area
Yes, I recommend
Phenolphthalein cubes worth it all! - For teachers like me who prefer kits because of the busy schedules we have during the school year, this is a complete one! The phenolphthalein cubes are ready to go and save much time when preparing to offer students opportunities to investigate surface area and size of cells. The cubes make this kit "good stuff"! This kit is worth considering for a diffusion and osmosis investigation. Alth
Was this review helpful? Yes No
Yes: 5 No: 2 
Boca Raton, Flo
Yes, I recommend
Fabulous fun learning - My students and I loved this. I had made my own blocks before but these were so much better. the students got the concept very quickly. Well done Wards....I will be ordering these again.
470136-678KT 134.99 USD InStock
470136-678 470134-768
Ward's® AP Biology Investigation 4: Cell Processes: Diffusion and Osmosis
Educational Materials Biology Educational Materials AP Biology Learning Activities
Meets AP Science Practices 2, 4, and 5, and Big Idea 2.

  • Three separate activities to quantitatively measure osmosis and diffusion
  • Save time with well-prepared materials
Using two different models, students will simulate the movement of water and nutrients across a cell membrane and observe osmosis in living tissue, enabling a clear understanding of the properties of osmosis and diffusion and their role in maintaining homeostasis in the cell. As a result, students will be able to pose their own scientific questions about the selective permeability properties of cell membranes and provide explanation for how cell size and shape affect rates of diffusion. A refill kit is available and contains only consumable component items it does not contain additional student or teacher guides. Note: Due to regulatory issues, Elodea is not included in the new kit.

AP and Advanced Placement Program are registered trademarks of the College Entrance Examination Board, which was not involved in the productionof and does not endorse these products.

Ordering information: A coupon is included for redemption of perishable materials. Redeem by mail, phone, fax, or email. At times, supply may be limited due to high demand.  Please place your order approximately two weeks in advance.






Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty

Terms and Conditions


Ward's Science is Here to Help You
We've made it easy to place your Ward's Science order by providing all the information you need below.
Terms and Conditions of Product Sale
All orders are governed by the Terms and Conditions of Product Sale accessible here. By placing an order, you represent that you have read and agree to the Terms and Conditions of Product Sale.
Shipping Terms
All orders will incur shipping and handling fees added to the total order value. Shipping charges may vary based on the nature of the product, total weight, destination, delivery date, and delivery method. Orders will ship via UPS carrier at current published rates. Shipping costs are estimated at the time of online order. Orders required to ship by motor freight may incur an additional shipping charge. All orders $24.99 or less (pre-tax) will be subject to an additional $7.00 handling fee. Our shipping terms are FOB shipping point unless otherwise specified. For more information regarding specific shipping terms for your account, contact your Ward's Science Account Manager. Visit to locate a representative in your area.
Order Online and Save!
Receive FREE standard ground shipping on orders of $250 or more when you place your order online at Order total must be at least $250 before tax; total may include live and hazardous materials, however these materials will remain subject to standard shipping charges and fees. Excludes Alaska and Hawaii.
Chemical & Hazardous Shipping Fee
Materials classified as hazardous by the D.O.T. may include, but are not limited to, chemicals, microbiological specimens, or activity kits containing these materials. If your order contains an item classified as hazardous by the D.O.T., a minimum $27.50 fee will be charged for each order. Orders for chemicals and hazardous materials will only be accepted from educational and research institutions; we will not ship chemicals to individuals. Select chemicals are now available with Poison Packs to enable faster shipping. Previously, these chemicals shipped freight within 7-14 days and incurred a $70.00 freight shipping charge. Now, added Poison Packs enable your chemicals to ship via UPS to arrive within 3-4 days, eliminating the $70 freight charge. For a list of chemicals that include Poison Packs, visit .
Live Materials Delivery & Guarantee
All micro life cultures will be delivered to you within two business days when order is placed before 12:00 om EST. (demonstration plates, microalgae, Nostoc excluded). Your specimens or cultures will arrive in good condition or we will send a free replacement as soon as the next day. Requesting a delivery date of Wednesday, Thursday, or Friday ensures healthy delivery of your live specimens.
Bacteria and Pathogens
Shipping pathogens and bacterial cultures to high schools and individuals is prohibited by the Federal Health Service. State or local authorities may require a permit before we can ship pathogens to you. Colleges and universities are permitted to order pathogens and bacterial cultures through an institutional purchase order only.
Product Representation
Every effort is made to ensure accuracy in our product images, descriptions, and pricing prior to publication. However, due to occasional changes made by vendors after date of publication, the physical appearance of items may change or vary in color from what is shown in the catalog. We assure the items you receive will satisfy all product specifications and requirements. Catalog pricing and product availability is subject to change. If a typographical error in pricing should occur, we are not obligated to honor the misprinted price. Please check our website for the most recent updates to product images, descriptions, availability, and pricing.
Your Favorite Items, Always in Stock
Thousands of our best-selling products always stocked and ready when you need them, so you don't have to wait for the items you use most. Items are shipped within 48 hours of ordering when order is received electronically or by phone prior to 1:00 pm EST. In-stock promise and 48-hour shipping time excludes hazardous chemicals and exceptional order quantities which will be made available at lead time. Availability subject to change in the event of natural disaster or forces of nature affecting sourcing, shipping, transportation, or availability of living material required for producing saleable goods. Ward's Science will contact the customer directly to communicate the occurrence of such an event and provide alternate materials when available. Current stock and availability for all products available online on every product page.
Promotional Exclusions
Unless otherwise specified, any item with a price ending in '9' (i.e. $5.09, $14.99, $100.89) is excluded from special offers, discounts, and promotions. Promotional discounts may not be combined with any other offers, discounts or promotions. Offers for free shipping include standard ground shipping only.
Credit & Invoicing
Credit is extended to all educational institutions. Terms are net 30 days from the date of invoice. Teachers' personal orders are always welcome. For more information email
Sales Tax
Sales tax (state and local) is based on shipping destination and will be included on your invoice. If you are exempt form sales tax, please provide the proper exemption documentation when placing your order. Exemption must be for the state of your shipping address. Visit us online to download a form at
100% Satisfaction Guaranteed Returns
We accept product returns for any reason within 60 days of purchase. Items returned must be unused and in original packaging, and not damaged, written on, or defaced in any way. To return an item for refund, replacement, or credit, please email or call 800-962-2660 for a return authorization number and further instructions for return. Please have your order number readily available so that we can better assist you. In some cases, a restocking fee may apply. Items returned without prior authorization may not be accepted or credited. Items under warranty will be repaired or replaced at our discretion. To ensure the quickest return or replacements, we recommend you inspect all packages immediately upon arrival to ensure your satisfaction. A carrier inspection may be required.  


Print These Terms