So, I decided to do some math to figure out how many bananas 682 ate in this test:

Item: SCP-3521

Tissue test record: N/A

Termination test record:

SCP-682 was moved into an abandoned testing facility. There are no populations or human residences within 20 kilometers, and to insure there would be no trespassers, the surrounding area is fenced off. SCP-682 was then fed a recently deceased Bos taurus carcass with one instance of SCP-3521 hidden within.

<Begin Log>

<4 seconds> SCP-682 completely consumes the carcass.

<10 seconds> SCP-682: What is this?

<13 seconds> SCP-682 falls to the ground

<15 seconds> SCP-682: [EXPLETIVE REDACTED]

<23 seconds> The entire testing facility was completely consumed by bananas at this point, and the surrounding area became extremely radioactive. SCP-682 is still being observed via thermal cameras and goggles.

<30 seconds> SCP-682 has ceased all movement. Whether this is due to not being able to move under the bananas, or if the termination was successful was unknown.

<2 minutes, 40 seconds> SCP-682 is observed to be rapidly consuming the bananas.

<4 minutes, 3 seconds> SCP-682 speeds up. It is estimated that SCP-682 is consuming bananas at a rate of 40,000 g/s.

<7 minutes, 9 seconds> SCP-682 has consumed roughly 70% of the bananas. The head of SCP-682 is able to be seen.

<7 minutes, 12 seconds> SCP-682: Going to… (unintelligible)

<7 minutes, 20 seconds> SCP-682 emits an extremely loud roar measuring at 120 decibels. The area surrounding the testing facility seems to "waver"

<7 minutes, 34 seconds> A pale yellow ray emits from SCP-682's mouth, coming into contact with the surrounding helicopters. Said ray is extremely radioactive measuring in at 2,000 roentgens.

<End Log>

SCP-682 soon escaped the surrounding testing area. SCP-682 was eventually recaptured, and while in containment, SCP-682 emitted ███ roentgens for the next 72 hours before ceasing radioactive activity.

Note: What? Seriously? How did 682 eat all of those bananas? Where did all of it even go? 9.12 million kilograms of bananas and extreme radioactivity failed to incapacitate 682 for longer than 10 minutes. Where do we even go from here?

-Dr. ████

Assuming he ate all of the bananas, which I think he did sometime after the log ended thanks to what the Doctor said, he ate 9.12 million kilograms of bananas. That translates to 9120000000 grams of bananas. 

The average banana weighs 118 grams.

Divide 9120000000 by 118, and you get….

Approximately 77288136.  THAT'S A LOT OF BANANAS.

But then I wondered…how much Potassium is that?

1 of the average bananas I mentioned earlier has 0.422 grams of potassium.

Multiply 77288136 by that number and you get….

 Approximately 34393221 grams of potassium. HOLY SH*T.

That's enough to kill around 982663 people!

682 is a BEAST.

Also, please correct me if I did any math wrong.