September 14

Lab Day 5: Soil Enrichment, Metadata, pH

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Rationale:

  • Make enriched lysate of soil B, find pH of soil and start soil metadata to find future calculations of sand, silt, and clay.

Detailed Procedure: Enriched Lysate

  1. Took vial from Lab day 4 and added LB Broth up to 12 mL mark
  2. Shook vial for 10 mins
  3. Weigh vial= 19.04 g
  4. Centrifuge for 5 mins
  5. Syringe filter 7.5 mL of supernatant (did not have enough for direct)
  6. Add 0.5 mL Arthro to vial

Detailed Procedure: Metadata

  1. Add ~10 m of soil in a 50 mL vial.
  2. Add water up to 30 mL mark
  3. Shook vial for 30 secs
  4. Add soil disperse solution to it and mix for a bit
  5. Let sit for 48 hours
  6. Took some soil and weigh it with petri dish
  7. Let sit for 48 hours to dry

Detailed Procedure: pH

  1. Took pinch of soil in a small pH vial and filled the rest with water
  2. Shook for a bit and rip off 1 inch of pH paper
  3. Dip paper for 45 secs and compare color
  4. Recorded ph was green= 7.0

Observation/Results

  • petri dish weight= 2.35 g
  • petri dish weight + soil= 6.26 g
  • after this, I ran out of all of my soil, so I have no more left to test if needed in the future.

Next steps

  • calculate sand, silt, clay
  • weigh petri dish when soil dries
  • plaque assay with enriched because I have no direct lysate


Posted September 14, 2018 by soo-un_jeong1 in category Soo-Un Jeong

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