I now have a clear picture. The distinguishing factor is whether a record contains any samples (application-test results) and any step results.

Experiments with NO recorded result at all (no sample application-test, no process-step result):

The only one truly empty is exp-9076-006 (Batch 6) — it carries no samples, no process-step results, no measurements; just the batch label/alias.

I should be precise, though, because the question can be read two ways. Here's the honest breakdown:

Genuinely empty (no sample test, no step result, no measurement):

• Batch 6 (exp-9076-006) — the single record with literally nothing: no samples, no process steps, no results [APP DATA- BYK 9076 equivalent.xlsx, via batch table; only the row label exists].

Records that have process data but NO recorded outcome/result (outcome=unknown, and no application-test results on any sample). These have charges/measurables logged but no end-point result. This is a large set, including Batches: 2, 3, 4, 7, 8, 9 I, 9 II, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24 A/B/C/CI/CR/CR2, 25 B/I/II, 26 A/B, 27 A–E, 28 A–C, 29 A/B/D, 30, 32, 33, 34, 34 C, 35, 37, 37 A, 38 C, 38 D, 39, 42, 48 B99/BC/K/PA50, 49, 50, 50 A, 50 B, 51 A/B/C, 54 A, 55, 55 D, 56, 57, 58.

Caveats:

• outcome=unknown does NOT mean "no result on record" — some of these batches DO have application-test rows (e.g. Batch 1, 45, 52 shown above all have test results despite being un-graded). Conversely, some records with step measurements have no end-product/application result.
• Only *failed* application-test reports exist in this drop, so absence of a report ≠ a passing sample.

If by "no recorded result" you mean zero result data of any kind (no application test and no step measurement), then the answer is just Batch 6. If you mean no application/end-product test result recorded, the longer list above applies.