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To complete “Explore the Lab” in Tides of Tomorrow, inspect Eyla’s document and the laboratory protocol, take the sample key from Dr. Keel’s desk drawer, unlock the sample apparatus, and select the vial whose readings satisfy all four limits. The walkthroughs report a successful reading of EG 35 U, EV 215 U and PL 7,500 U, with total enzyme units below 8,000 U. Because the guides identify that vial differently, use the numbers shown in your game rather than relying only on a label or side of the machine.
Where does “Explore the Lab” happen?
The objective appears during Join the Mystics’ Expedition, at the Lazarus Facility. The sequence takes you to the facility by submarine. After entering the laboratory, proceed through the door that opens following a vision; the “Explore the Lab” objective is handled in the rooms beyond it. The Into Indie Games walkthrough describes this route, while a 17173 guide attributing its material to Polygon covers the same laboratory puzzle.
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You do not need a special item from outside the facility before starting this section. The important progression items are inside the lab: the document and procedure provide the clues, and the key in Dr. Keel’s desk opens the sample storage apparatus.
How do I complete “Explore the Lab” step by step?
Follow the sequence below in order. If an interaction prompt does not appear, make sure you have advanced the conversation and allowed the nearby character animation to finish.
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- Enter the laboratory through the newly opened door. Once the vision sequence has opened the way, go through the door and inspect the notes in the room. This establishes the investigation area for the objective.
- Read Eyla’s document. Eyla finds a document on a table. Interact with it instead of walking past it; the document concerns a possible cure for Plastemia and is the first specific clue for the sample investigation.
- Wait for Eyla to move, then inspect the protocol. The procedure is on the table in front of Eyla. The 17173/Polygon-attributed walkthrough says Eyla moves to the next table, so give her time to relocate before trying the interaction. If the table seems inactive, reposition after she has completed that movement.
- Search Dr. Keel’s desk. The desk is behind you relative to the earlier table according to Into Indie Games; the other walkthrough places it near the locked door and opposite the sample apparatus. Check the desk drawer to obtain the sample key.
- Unlock the sample storage apparatus. Return to the locked sample unit and use the key. The apparatus exposes the samples and lets you inspect their enzyme readings.
- Speak with Nahe and read the scattered notes. Nahe is part of this investigation. The notes explain the four limits used to judge the samples. Reading them is useful if you want to solve the puzzle from the clues rather than immediately using the reported solution.
- Compare every sample against all four limits. Do not stop after finding a vial with a plausible EG, EV or PL value. The selected sample must pass the range, both maximum/minimum checks and the total-unit cap.
- Tell Nahe that you found the correct sample. This advances the story to the next objective, “Test the Sample.”
What enzyme readings does the correct sample need?
The puzzle is a constraint check. A sample is valid only when it satisfies every row in the table, not merely the three named enzyme readings. The walkthroughs report the following limits and a successful set of values:
| Measurement | Required value | Reported successful reading |
|---|---|---|
| EG / Egrases | 20–40 U | 35 U |
| EV / Evanesase | Below 300 U | 215 U |
| PL / Plastase | Above 6,000 U | 7,500 U |
| Total enzyme units | Below 8,000 U | Confirm on the in-game display |
The EG value is a range, so a reading of exactly 20 or exactly 40 qualifies. EV must remain under 300, meaning 300 itself does not satisfy the stated condition. PL must be greater than 6,000, so a reading of exactly 6,000 is not enough. Finally, the total must stay below 8,000; do not assume that passing the three named enzyme checks automatically passes the total.
The guides describe the successful option in different ways. Into Indie Games calls it Canister A, while the 17173 article calls it the left-side sample. The sources do not explain whether that difference comes from camera perspective, naming, or a version-specific presentation. Treat the readings as the dependable identifier: inspect the on-screen values and choose the sample showing EG 35 U, EV 215 U, PL 7,500 U and a total below 8,000 U, or otherwise the vial that meets every threshold.
What should I do if the key or protocol interaction is missing?
Most apparent blocks in this room come from interacting out of sequence. Start by confirming that you went through the door opened after the vision and examined Eyla’s document. Then let Eyla finish moving to the next table before looking for the protocol interaction.
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- No protocol prompt: move away from the table, wait for Eyla to reach her next position, and return. The procedure is associated with the table she stands in front of after that movement.
- No key in the desk: check the drawer rather than only the desktop. The key is specifically reported as being in Dr. Keel’s desk drawer.
- Cannot open the sample unit: make sure the key has been collected and that the objective has advanced far enough for the apparatus to become interactive.
- Unsure which vial is correct: ignore the left/right or A/B wording temporarily and inspect the numerical readings. The two walkthroughs disagree on the label or location but agree on the limits.
- Only three readings are visible: use the notes to identify the fourth requirement and look for the total enzyme figure on the apparatus display before confirming.
Neither cited guide is official game documentation, so minor differences in camera orientation or terminology should be resolved by the values shown in your own interface. The objective should advance once you report the valid sample to Nahe.
Which sample should I choose: Canister A or the left-side vial?
Choose by measurement, not by position. One source’s “Canister A” and the other source’s “left-side” description may refer to the same physical sample from different viewpoints, but neither cited walkthrough establishes that equivalence. Selecting a vial solely because it is on the left or marked A risks carrying the wrong sample if your view or build presents the apparatus differently.
Use this quick checklist at the machine:
- EG/Egrases is between 20 and 40 U inclusive.
- EV/Evanesase is less than 300 U.
- PL/Plastase is greater than 6,000 U.
- The displayed total enzyme units are less than 8,000 U.
The reported winning readings—EG 35 U, EV 215 U and PL 7,500 U—are useful confirmation, but the total still needs to be checked on the display. If another vial appears to match the three individual numbers but fails the total cap, it is not the valid choice.
What happens after I find the sample?
After you identify the vial, tell Nahe that you found the correct sample. The story moves to “Test the Sample,” where you test the sample and decide who receives it: Eyla or your own character.
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The walkthroughs report different benefits for that recipient decision. Into Indie Games describes a Pro Mankind boost when you give the sample to Eyla and a Survivalist boost when you keep it for yourself. The 17173/Polygon-attributed guide says the correct sample grants a health boost to either recipient and recommends Eyla when the player already has enough Ozen and wants to improve her chances of survival.
There is no evidence in the cited guides for one universally best choice or a complete table of every later consequence. Make the decision according to your current Ozen situation and whether you value the reported trait benefit for Eyla or for your own character. These are walkthrough-reported outcomes, not independently tested results.
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No. The notes reveal the four constraints, but you can use the thresholds above and verify the readings directly at the apparatus. Reading them is still worthwhile if you want the laboratory’s context and the intended clue trail rather than treating the task as a purely numerical check.
The document and procedure are more important for progression than for memorizing lore: inspect them so the investigation advances, then use the apparatus display for the final decision.
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What is the current release context for Tides of Tomorrow?
This quest belongs to the released version of Tides of Tomorrow, a narrative adventure developed by DigixArt and published by THQ Nordic. The publisher’s April 22, 2026 launch announcement lists PC, PlayStation 5 and Xbox Series X|S. An earlier release-date announcement also stated that digital and physical editions would be available in major territories.
The original soundtrack, including deluxe physical formats mentioned by the publisher, is a collector item and is not required for “Explore the Lab.” Nothing outside the Lazarus Facility sequence is needed to obtain the key or solve the sample check.
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Two secondary walkthroughs support the route and puzzle solution. They agree on the location of the key, the four enzyme limits and the reported successful readings. Their only material discrepancy is the way they name or position the winning sample, which is why the safest in-game method is to verify the numbers.
In practical terms, the solution is:
- Advance through the Lazarus Facility laboratory.
- Read Eyla’s document and the protocol table after she moves.
- Take the key from Dr. Keel’s desk drawer.
- Unlock the sample apparatus and consult Nahe’s notes.
- Select the vial that passes EG 20–40 U, EV under 300 U, PL over 6,000 U and total under 8,000 U.
- Report the choice to Nahe, then decide whether Eyla or your character receives the tested sample.
That checklist resolves the quest without depending on an ambiguous left/right description and leaves you ready for “Test the Sample.”
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Frequently Asked Questions
Can I solve the sample puzzle without knowing which vial is Canister A?
Yes. The label is less reliable than the readings because the two walkthroughs describe the winning vial differently. Inspect each display and accept only the sample that passes all four limits, including the total enzyme cap.
Why does the total enzyme value matter if EG, EV and PL already match?
The puzzle states a separate maximum for total enzyme units, so three successful individual readings are not sufficient by themselves. The cited solution does not itemize that total; verify the combined figure on the apparatus before confirming your choice.
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Should I give the sample to Eyla or keep it for my character?
The reported benefit depends on the recipient: Eyla is associated with a Pro Mankind boost, while keeping it is associated with a Survivalist boost. The guides also mention a health benefit for either recipient, so your current Ozen and survival priorities should decide the branch.
Is “Explore the Lab” available on consoles as well as PC?
The publisher lists the released game for PC, PlayStation 5 and Xbox Series X|S. The quest walkthrough itself does not describe platform-specific changes to the laboratory interactions.
