Datasets:

JOHNNYlee1
/

LabOPBench

id stringlengths 36 36	major_category stringclasses 1 value	category stringclasses 5 values	item_no stringlengths 7 16	question stringlengths 169 689	image listlengths 1 3	answers listlengths 4 4
0e806e86-016c-4451-ba6a-072d8c1a1fe5	Experiment_Character	Crystal	Crystal_001	In the scenario shown in Crystal_001_01.png, the product in the flask appears as shown in the figure. Analyze the crystal morphology in the figure and speculate in which experimental step this might have been obtained?	[ "Crystal/Crystal_001_01.png" ]	[ "A: The image shows yellow radiating polycrystals growing on the inner wall of the flask, together with a large amount of yellow product precipitate accumulated at the bottom of the flask. This was most likely obtained during the rotary evaporation solvent-removal process. Rapid solvent evaporation during rotary ev...
b12ec82d-2322-497d-a1d5-8cebc51d8953	Experiment_Character	Crystal	Crystal_002	In the scenario shown in Crystal_002_01.png, the product in the flask appears as shown in the figure. Analyze the crystal morphology in the figure and speculate in which experimental step this might have been obtained?	[ "Crystal/Crystal_002_01.png" ]	[ "A: The image shows red radiating polycrystals, and part of the product adheres to the bottom of the flask in a film-like manner, indicating this may have been obtained during the rotary evaporation solvent removal process, where solvent rapidly evaporates during rotary evaporation and nucleation produces polycryst...
67c2c89e-4bfd-4de7-be74-35ab7578b487	Experiment_Character	Crystal	Crystal_003	In the scenario shown in Crystal_003_01.png, the product in the vial appears as shown in the figure. Analyze the crystal morphology in the figure and speculate in which experimental step this might have been obtained?	[ "Crystal/Crystal_003_01.png" ]	[ "A: The image shows white radiating polycrystals, and a ring-shaped crystallization zone is left at the bottom of the vial, indicating this may have been obtained during rotary evaporation, where the liquid level gradually decreases and product precipitates bit by bit to form polycrystals. (3 points)", "B: The im...
a63dccc2-48d5-4057-8fde-967835a80c6d	Experiment_Character	Crystal	Crystal_004	In the scenario shown in Crystal_004_01.png, please analyze the possible cause of the observed phenomenon and suggest how to optimize conditions to obtain higher quality single crystals.	[ "Crystal/Crystal_004_01.png" ]	[ "A: The needle-like crystals in the test tube are most likely formed because product fractions collected after column chromatography were left in the test tube, and solvent evaporation caused the local concentration to increase rapidly. To obtain higher-quality single crystals, the product should be transferred to ...
ab320a27-9ef9-4e49-bfb1-7ace9674bbf5	Experiment_Character	GCMS	GCMS_001	In the GC-MS scenario shown in Figure GCMS_001_01.png, observe the information in the figure. Please analyze the following questions based on this chromatogram: 1. Combined with the peak shape and retention time information in the figure, determine whether the sample separation meets quantitative analysis requirements ...	[ "GCMS/GCMS_001_01.png" ]	[ "A: : The peak shape in the figure is relatively symmetrical, showing no obvious tailing or fronting phenomena, indicating that the sample separation basically meets quantitative analysis requirements. However, the short retention time may lead to insufficient resolution; it is recommended to optimize the column te...
22dd03a3-90f2-4d75-b128-a56f38c1ee49	Experiment_Character	GCMS	GCMS_002	In the GC-MS chromatogram shown in Figure GCMS_002_01.png, observe the information in the figure. Please answer what these small peaks may originate from and whether these small peaks may affect the qualitative and quantitative results of the target compound.	[ "GCMS/GCMS_002_01.png" ]	[ "A: : These small peaks may originate from low-boiling-point solvents. The small peaks may not directly affect qualitative analysis but may interfere with quantitative analysis. (3 points)", "B: : These small peaks may originate from low-boiling-point impurities in the sample. Qualitative results may not be affec...
eb0d06fa-8f39-415a-b274-9303276d3869	Experiment_Character	GCMS	GCMS_003	Based on the GC-MS chromatogram shown in Figure GCMS_003_01.png, observe the information in the figure. Analyze whether the injection mode of this sample is reasonable and what may be the causes of the phenomena shown in the figure?	[ "GCMS/GCMS_003_01.png" ]	[ "A: : The injection mode is fine, but the sample amount may be excessive or the column overloaded. It is recommended to optimize the split ratio to reduce column overload. Tailing may be related to the presence of strongly polar compounds in the sample. (3 points)", "B: : The injection mode is fine. The tailing p...
4819dcb1-8ea7-439f-8b88-838cb579205c	Experiment_Character	GCMS	GCMS_004	Based on the GC-MS chromatogram shown in Figure GCMS_004_01.png, combined with the shape and position of the chromatographic peaks in the figure, determine whether there is insufficient separation and analyze possible causes.	[ "GCMS/GCMS_004_01.png" ]	[ "A: : The two peaks in the figure have very close retention times and show significant overlap in peak shape, indicating insufficient separation. Possible cause: Column polarity does not match the sample. (3 points)", "B: : The two peaks in the figure have close retention times and may have insufficient separatio...
fca18b15-23b2-4c1b-983b-e94ca553561c	Experiment_Character	LCMS	LCMS_001	During the experiment, researchers discovered a class of reagents shown in LCMS_001_01.png. When analyzing the synthesis reaction solution of such reagents using LC-MS, which solvent should be used to dissolve the sample before injection? Provide the main reasons.	[ "LCMS/LCMS_001_01.png" ]	[ "A: Dissolve the sample with acetonitrile for injection, because unlike protic solvent methanol, acetonitrile is an aprotic inert solvent that can avoid potential solvolysis or nucleophilic attack on reactive ylide/enamine structures, ensuring the structural integrity of the sample during analysis. (3 points)", "...
432b598c-bca3-40cb-80e4-16a68b006f44	Experiment_Character	LCMS	LCMS_002	The reaction shown in LCMS_002_01.png is performed. After the reaction proceeds for some time, the bottle cap is opened directly and a sample of the reaction mixture is taken for LC-MS analysis to determine whether the reaction is complete. Is this operation reasonable?	[ "LCMS/LCMS_002_01.png" ]	[ "A: Unreasonable. Because the reaction system contains triphenylphosphine and triphenylphosphine oxide, which can easily cause severe contamination of the reverse-phase chromatography column in LC-MS. (3 points)", "B: Unreasonable. Mitsunobu reaction needs to be carried out under anhydrous and oxygen-free conditi...
bff92639-6d3f-4d7d-ade8-adc21b80e7f3	Experiment_Character	LCMS	LCMS_003	After the reaction shown in LCMS_003_01.png is performed, the reaction mixture is monitored using LC-MS. Based on the LC-MS spectrum shown in LCMS_003_02.png, determine whether the reaction is complete?	[ "LCMS/LCMS_003_01.png", "LCMS/LCMS_003_02.png" ]	[ "A: The reaction is not complete. At a 1:1 molar ratio, the starting material p-nitrophenylacetylene (no m/z signal) at retention time 1.52 minutes in the LC-MS spectrum is not completely consumed, indicating that the reaction can still continue. (3 points)", "B: The reaction is not complete. In addition to the p...
a2fb3f4b-d11c-40f7-b849-2bbba198f836	Experiment_Character	LCMS	LCMS_004	The experiment shown in LCMS_004_01.png is performed. After the reaction is complete, the reaction mixture is triturated with 0.1M hydrochloric acid aqueous solution. LC-MS analysis is performed on the filtrate and filter cake separately, and the two spectra obtained are shown in LCMS_004_02.png and LCMS_004_03.png res...	[ "LCMS/LCMS_004_01.png", "LCMS/LCMS_004_02.png", "LCMS/LCMS_004_03.png" ]	[ "A: The expected effect has not been achieved. After trituration treatment, the starting material (retention time 1.11 minutes, m/z 332.20) and the product (retention time 1.61 minutes, m/z 531.24) remain simultaneously in the filter cake shown in LCMS_004_03.png. Perform ultrasonic treatment on the filter cake, th...
c0897576-c251-4fe8-9723-f2b5655b303c	Experiment_Character	Meltingpoint	meltingpoint_001	In the organic chemistry experiment melting point testing scenario shown in Figure meltingpoint_001_01.png, please confirm the temperature at which the compound begins to melt and determine whether the compound is pure.	[ "Meltingpoint/meltingpoint_001_01.png" ]	[ "A: : The temperature at which the compound begins to dissolve is 174.8°C. Observation shows the compound is pure. (3 points)", "B: : The temperature at which the compound begins to dissolve is 174.8°C. Need to confirm the latter half of melting point information to determine if it is pure. (2 points)", "C: : T...
1cca7691-f36c-468e-ac65-82d44f4577a2	Experiment_Character	Meltingpoint	meltingpoint_002	In the organic chemistry experiment melting point testing scenario shown in Figure meltingpoint_002_01.png, please answer what is the melting point of the compound and why the information shown in the figure appears.	[ "Meltingpoint/meltingpoint_002_01.png" ]	[ "A: : The melting point of the compound is unknown. The information shown in the figure is because the melting point is much lower than the starting measurement temperature, and the compound had already dissolved when added. (3 points)", "B: : The melting point of the compound is unknown. The information shown in...
43b3aaef-f978-4199-9672-86f2c2500341	Experiment_Character	Meltingpoint	meltingpoint_003	In the melting point determination scenario shown in Figure meltingpoint_003_01.png, confirm the melting point of the compound and explain the information in the figure.	[ "Meltingpoint/meltingpoint_003_01.png" ]	[ "A: : The melting point of the compound is unknown. The compound may be impure, resulting in no accurate melting point. (3 points)", "B: : The melting point of the compound is unknown. The melting point of the compound may be lower than the starting temperature, causing confusion in subsequent measurements. (2 po...
762d78e7-ddcc-48be-bfa8-3d7c429bc48c	Experiment_Character	Meltingpoint	meltingpoint_004	In the melting point testing scenario shown in Figure meltingpoint_004_01.png, please analyze the initial melting point temperature of the compound and explain the cause of light transmittance changes in one sentence.	[ "Meltingpoint/meltingpoint_004_01.png" ]	[ "A: : The initial melting point of the compound is unknown. It may be that the compound transformed into a gel-like state during heating, causing gradual changes in light transmittance. (3 points)", "B: : The initial melting point of the compound is unknown. It may be that inaccurate compound loading caused chang...
009dc2df-440c-4547-b64e-58eebc37c023	Experiment_Character	NMR	NMR_001	After purification of the fluorinated product, the sample is prepared in deuterated DMSO for ¹H NMR monitoring, and a small amount of internal standard is added as shown in NMR_001_01.png for simultaneous ¹⁹F NMR testing. The obtained spectrum shows peaks with non-integer integration values, as shown in NMR_001_02.png....	[ "NMR/NMR_001_01.png", "NMR/NMR_001_02.png" ]	[ "A: The quintet at 2.04 ppm is the residual solvent peak of deuterated acetonitrile, and the singlet at 1.99 ppm is the incompletely removed ethyl acetate peak. (3 points)", "B: The peak at 2.04 ppm is the residual solvent peak of deuterated acetone, and the peak at 1.99 ppm is an impurity. (2 points)", "C: The...
d163c29a-547c-4fca-824e-0efab578261f	Experiment_Character	NMR	NMR_002	Aryl halides containing F atoms are selected as substrates, and ¹⁹F NMR is used to monitor the progress of the Ullmann reaction. The obtained spectrum is shown in NMR_002_01.png. Please analyze the problems existing in this spectrum and explain their causes.	[ "NMR/NMR_002_01.png" ]	[ "A: The spectrum has extremely low signal-to-noise ratio. Copper ions present in the sample can cause abnormal relaxation. (3 points)", "B: The spectrum has extremely low signal-to-noise ratio. Copper salt in the sample is insoluble, causing sample inhomogeneity and baseline distortion. (2 points)", "C: The spe...
f9e462e3-8566-4865-b6d5-c2c5c5817392	Experiment_Character	NMR	NMR_003	After performing the experiment shown in NMR_003_01.png, ¹⁹F NMR is used to monitor the fluorine signal of the product, and the spectrum shown in NMR_003_02.png is obtained. Please analyze the problems existing in this spectrum and explain their causes.	[ "NMR/NMR_003_01.png", "NMR/NMR_003_02.png" ]	[ "A: The fluorine signal detection range is limited to the negative chemical shift region. The peaks shown in the figure correspond to fluorotrichloromethane (CFCl₃) rather than the product fluorine signal. (3 points)", "B: The fluorine signal detection range is limited to the negative chemical shift region, while...
80a190aa-a2a2-44e4-9b98-347c95427887	Experiment_Character	NMR	NMR_004	The synthesis scheme for the target compound is shown in NMR_004_01.png (only partial structure shown). ¹⁹F NMR is used to monitor the fluorine signal of the product, and the spectrum shown in NMR_004_02.png is obtained. Please analyze the problems existing in this spectrum and explain their causes.	[ "NMR/NMR_004_01.png", "NMR/NMR_004_02.png" ]	[ "A: The adjacent small peaks near the main peak originate from the sulfur-34 isotope effect. (3 points)", "B: There are adjacent small peaks near the main peak, which are caused by the isotope effect. (2 points)", "C: Impurities were not completely removed during purification; this small peak corresponds to the...

LabOPBench

LabOPBench is a benchmark for evaluating multimodal large language models in realistic laboratory scenarios. It is designed to assess their capabilities in experimental workflow reasoning, safety and anomaly assessment, operational decision-making, and result analysis.

GitHub: johnnylee00/LabOPBench

This private partial release contains 100 questions: 20 examples from each major category. Each record includes the question, image path(s), and A-D scoring answers. The full benchmark will be expanded after the paper is released.

Files

data/Experiment_Character.jsonl
data/Experiment_Monitor.jsonl
data/Experiment_Postprocess.jsonl including TLC examples
data/Experiment_Preparation.jsonl
data/material_science.jsonl
images/ contains all referenced PNG files
examples/evaporation_example.json is a qualitative model-response example and is not part of the formal HF dataset configs

Data Format

Each JSONL row uses this structure:

{
  "id": "...",
  "major_category": "Experiment_Postprocess",
  "category": "TLC",
  "item_no": "TLC_001",
  "question": "...",
  "image": ["TLC/TLC_001_01.png"],
  "answers": ["A: ... (3 points)", "B: ... (2 points)", "C: ... (1 point)", "D: ... (0 points)"]
}

The image entries are relative paths under the repository's images/ directory.

Quick Start

For private access, log in first:

hf auth login

Download the dataset repository and run an evaluation:

git clone https://github.com/johnnylee00/LabOPBench.git
cd LabOPBench
python -m pip install -e ".[openai]"

export OPENAI_API_KEY="<your-api-key>"
export OPENAI_BASE_URL="<your-base-url>"
MODEL="<model-name>"

hf download JOHNNYlee1/LabOPBench --repo-type dataset --local-dir data/LabOPBench

labopbench run   --data data/LabOPBench/data/Experiment_Postprocess.jsonl   --image-base-dir data/LabOPBench/images   --model-name "$MODEL"   --out outputs/experiment_postprocess_answers.json

labopbench score   --pred outputs/experiment_postprocess_answers.json   --data data/LabOPBench/data/Experiment_Postprocess.jsonl   --out outputs/experiment_postprocess_scores.json

Release Note

This is an initial private release for repository setup and workflow validation. It should not be treated as the complete benchmark or as a hidden-test leaderboard set.

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