1. Environmental Science Lab Manual and Notebook – Volume 2: The Issues
Water Quality: Activity 9 – Pollutants – Effects on Algal Growth Page 381
Water Quality: Activity 9 – Pollutants – Effects on Algal Growth
| Student Name: Lab Instructor: DATA |
Lab Date: Lab Section: |
Table 9.1. Absorbance (at 450 nm) of control versus pollutant treatment by concentration
and lab group.
| Absorbance (at 450 nm) | |||||||
| Lab Group |
Control | Low Nitrogen |
High Nitrogen |
Low Phosphorous |
High Phosphorous |
Low Acid Rain |
High Acid Rain |
| 1 | |||||||
| 2 | |||||||
| 3 | |||||||
| 4 | |||||||
| 5 | |||||||
| 6 | |||||||
| Mean: |
Original – Student’s Copy – Retain in lab manual
2. Plastics Selection report
Your Homework about Plastics Selection report
Plastics Selection( report)
Find a plastics part( such as bottle , plastic clothes , safety glass plastic, phone cover ……………..) or article and do the following:
1) Take a photo of the part or article and include it in your homework report.
2) Describe what resin and grade was used to manufacture the part, and how you made this determination.
3) Describe the important performance parameters that are critical to this part or article, moldability, toughness, modulus at temperature, cost , lubricity, etc.
4) Attach a “spec sheet” of the resin grade you believe was used to make the part
5) Describe the plastics processing method which was used to process the part or article
6) How did you make this determination?
Please site your sources.
