Water Quality B/C

[kate!]

How do you tell the difference between a picture of a blood midge and a midge?

Pictures of blood midges will always be red. So it looks exactly like a normal midge larvae, but it's bright red.

[Saucycedo]

Ok

[MattChina]

How can I correctly measure the salinity without calibration?

u cant

[RerandRee]

What is considered "A salinometer/hydrometer"? My team is considering individually calibrating mini capillary tubes for each percent salinity. Is the group of capillary tubes considered multiple devices?

[drcubbin]

What is considered "A salinometer/hydrometer"? My team is considering individually calibrating mini capillary tubes for each percent salinity. Is the group of capillary tubes considered multiple devices?

Sounds like a unique, but most likely not permitted, idea. In the rules, Part III a. states "...a salinometer/hydrometer..." and b. says "... the device..." so based on these I am guessing you get to bring only one device in with you.

[John Richardsim]

Check out this quizlet set for macroinvertebrate identification that I just finished: https://quizlet.com/363496522/water-qua ... ash-cards/

[aflucke]

A team at our last invitational was recently disqualified from the water quality event for tasting the salt water solution; is this a legitimate reason for disqualification?

[John Richardsim]

A team at our last invitational was recently disqualified from the water quality event for tasting the salt water solution; is this a legitimate reason for disqualification?

Absolutely. While small amounts of a salt water solution itself isn't dangerous to ingest, the fact that the solution is being used in a lab setting (even if the event wasn't in a lab room, the water was likely stored in a graduated cylinder, a beaker, or even just a large tub -- some container for which it should be apparent that the water isn't for consumption) makes this a safety violation of a pretty standard lab rule.

[MattChina]

A team at our last invitational was recently disqualified from the water quality event for tasting the salt water solution; is this a legitimate reason for disqualification?

Never eat ur experiments

[Rivkaaa]

A team at our last invitational was recently disqualified from the water quality event for tasting the salt water solution; is this a legitimate reason for disqualification?

Never eat ur experiments

lol yeah! Another common disqualifying factor is in CB when teams decide to taste the salt/sugar mixtures in order to tell which one it is!