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INDONESIA
Jurnal Pengelolaan Laboratorium Pendidikan
Published by Universitas Diponegoro
ISSN : -     EISSN : 2654251X     DOI : -
Core Subject : Education,
Education
Jurnal Pengelolaan Laboratorium Pendidikan (JPLP, e-ISSN: 2654-251X) adalah jurnal yang bertujuan mewadahi semua informasi karya ilmiah hasil penelitian, telaah pustaka, makalah teknis, dan kajian buku, dari bidang Pengelolaan Laboratorium. JPLP diterbitkan oleh Persatuan Pranata Laboratorium Pendidikan Universitas Diponegoro. JPLP terbit dua nomor pertahun pada bulan Januari dan Juli.
Arjuna Subject : -
Articles 110 Documents
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Reduksi Kadar Tembaga (Cu) pada Limbah Cair Proses Etching PCB di Laboratorium Fisika Menggunakan Metode Elektrolisis Suwardi, Suwardi; Lidiawati, Liza; Haidul, Haidul
Jurnal Pengelolaan Laboratorium Pendidikan Vol.7, No.1, Januari 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.1.32-40

Abstract

Limbah cair di Laboratorium Fisika FMIPA Universitas Bengkulu berasal dari proses pelarutan PCB dalam Praktikum Elektronika Dasar II yang mengandung tembaga dan bersifat asam. Bila limbah ini langsung dilepas ke lingkungan, akan mengakibatkan pencemaran lingkungan. Untuk mereduksi kadar tembaga dalam limbah, perlu dilakukan pengolahan limbah dalam skala laboratorium yang dapat mengurangi bahaya di atas. Penelitian ini menawarkan metode elektrolisis untuk pengolahan limbah cair secara sederhana, mudah, dan murah. Metode elektrolisis adalah metode yang mengubah energi listrik menjadi energi kimia. Penelitian ini dilaksanakan pada Mei – Oktober 2022 di Laboratorium Fisika FMIPA Universitas Bengkulu dengan lima tahapan, yaitu preparasi sampel, merangkai peralatan elektrolisis, proses elektrolisis, analisis spektrofotometer, dan interpretasi data. Tujuan penelitian ini adalah untuk mereduksi kadar tembaga pada limbah cair proses pelarutan PCB dan menentukan parameter elektrolisis (waktu, jarak elektroda, dan tegangan listrik) yang optimum dalam mereduksi kadar tembaga limbah cair. Manfaat penelitian adalah untuk memahami mekanisme metode elektrolisis dalam mereduksi kadar tembaga pada limbah cair proses pelarutan PCB dan mengurangi tingkat bahayanya. Hasil penelitian menunjukkan bahwa elektrolisis berhasil menurunkan kadar tembaga dalam limbah cair dari 3,49 mg/l menjadi 2,87 mg/l dengan efisiensi sebesar 17,76%. Proses elektrolisis juga berhasil mengurangi tingkat keasaman (pH) limbah cair dari 1,21 menjadi 2,53. Kata kunci: limbah cair laboratorium, metode elektrolisis, proses pelarutan PCB
Invetarisasi Karakteristik Data Tanah Berbasis Formulir Digital dalam Kegiatan Praktikum Survei Tanah Andhika, Yosi; Riza, Sativandi; Putra, Aditya Nugraha
Jurnal Pengelolaan Laboratorium Pendidikan Vol.7, No.1, Januari 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.1.41-48

Abstract

Kegiatan praktikum survei tanah menggunakan metode konvensional dalam pengumpulan data, yaitu dengan mencatat data secara manual di lapangan. Pengamatan lapangan yang dicatat diantaranya fisiografi lahan dan morfologi tanah. Data yang telah dikumpulkan kemudian diolah dan disimpan dalam bentuk database. Database mampu memuat data dalam bentuk tabel, serta dapat ditambahkan dalam format lainnya, seperti gambar atau file dokumen. Namun, metode konvensional ini memiliki beberapa permasalahan, yaitu data yang dikumpulkan rentan terhadap kesalahan, proses pengolahan data memakan waktu lama, dan analisis data tidak dapat dilakukan secara langsung. ESRI Survey123 salah satu dari aplikasi mobile yang dapat digunakan untuk mengumpulkan data di lapangan secara real time. Data yang dikumpulkan dapat langsung diakses oleh analisis data di laboratorium, sehingga proses analisis data dapat dilakukan lebih cepat dan akurat. Dengan pemanfaatan ESRI Survey123, data yang dikumpulkan lebih akurat dan proses pengolahan data lebih cepat. Hal ini dapat meningkatkan efisiensi dan efektivitas kegiatan survei tanah. Sehingga perlu dilakukan pembuatan form Survey123 yang disesuaikan dengan daftar fisiografi lahan dan morfologi tanah, serta data yang sudah di himpun dari lapangan mampu dibuat dalam bentuk database
Perbandingan Metode Sampling Secara Aktif dan Pasif pada Penentuan Jumlah Bakteri Udara di Lingkungan Kerja Ningrum, Dwi cahya; Sulistyawati, Sulistyawati; Sari, Hanif Tegar Muktiana
Jurnal Pengelolaan Laboratorium Pendidikan Vol.7, No.1, Januari 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.1.57-65

Abstract

Kualitas udara di dalam ruangan dipengaruhi oleh zat-zat pencemar seperti bahan kimia, pencemaran biologi, suhu ruangan yang terlalu panas atau dingin, kelembaban yang terlalu rendah atau tinggi. Zat pencemar biologi adalah mikroorganisme yaitu bakteri, jamur, dan spora yang berada dalam ruangan tersebut. Pengambilan sampel mikrobiologi di udara dapat dilakukan secara pasif dan aktif. Penelitian ini bertujuan untuk mengetahui perbedaan penggunaan metode pengambilan sampel secara pasif dan aktif terhadap jumlah bakteri udara di tempat kerja, dengan menggunakan sieve impactor dengan indikator jumlah angka kuman. Metode penelitian adalah cross sectional dengan jumlah titik  sampel sebanyak 41 titik. Data diolah dengan uji Mann-Whitney karena data terdistribusi tidak normal dengan tingkat kepercayaan 95%. Hasil penelitian menunjukkan bahwa jumlah bakteri yang didapatkan dengan metode pengambilan sampel secara pasif lebih banyak daripada jumlah bakteri secara aktif. Dari hasil uji Mann-Whitney didapatkan hasil ada perbedaan signifikan jumlah bakteri ruangan yang didapatkan dengan metode pengambilan sampel secara aktif dan secara pasif dengan hasil sig (2-tailed) =0,000 (p < 0,05). Kesimpulan penelitian ini adalah ada perbedaan penggunaan metode pengambilan sampel secara pasif dan aktif terhadap jumlah bakteri udara di tempat kerja.Kata kunci : bakteri udara, metode, pengambilan sampel
Kajian Kualitatif Potensi Ekstrak Etanol Buah Karamunting sebagai Indikator Asam Basa Elfa, Noor; Hidayah, Rina Nur; Gunawan, Hendra
Jurnal Pengelolaan Laboratorium Pendidikan Vol.7, No.1, Januari 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.1.66-72

Abstract

Karamunting (Melastoma malabathricum) adalah tumbuhan lokal yang menghasilkan buah berwarna ungu tua hingga hitam yang mengandung senyawa flavonoid dan tanin. Warna dari tanin dapat dimanfaatkan sebagai pewarna kertas indikator asam basa di laboratorium. Penelitian ini bertujuan untuk menentukan potensi ekstrak buah karamunting sebagai indikator kertas universal untuk menentukan pH larutan.. Metode penelitian meliputi ekstraksi zat warna dari buah karamunting, pembuatan kertas indikator, serta pengujian kertas pada berbagai larutan dengan rentang pH yang berbeda. Hasil penelitian menunjukkan bahwa ekstrak buah karamunting memberikan perubahan warna yang jelas pada kertas indikator yang telah dibuat, dengan variasi warna yang signifikan pada pH rendah (asam) hingga pH tinggi (basa). Hal ini menunjukan bahwa karamunting dapat menjadi alternatif indikator alami yang efektif, ekonomis, dan ramah lingkungan untuk uji asam-basa di laboratorium.
Inovasi Alat Penunjang Pembuatan Sediaan Histopatologi Triwahyuni, Heni; Lasmijan, Lasmijan
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.122-127

Abstract

The availability of supporting tools for histopathology slide preparation remains limited, characterized by high usage rates, inefficient material consumption, cleaning difficulties, frequent damage, high costs, small capacity, and low precision. This study aims to develop prototype innovations of supporting tools for histopathology preparation to address these issues. Three types of innovative tools were developed: a paraffin block mold, a slide rack for an automatic staining machine, and a slide box made of silicone-resin. The development process consisted of three main stages: the first mold creation (outer part), the second mold creation (inner part), and the casting of the innovative tools. The results demonstrate that the developed tools offer advantages in terms of effectiveness, efficiency, material savings, cost reduction, durability, and ease of production. Based on functionality testing, all tools were deemed feasible for use. This innovation is expected to serve as an alternative solution to the limited availability of supporting tools in the Anatomical Pathology Laboratory of the Faculty of Medicine, while also introducing a new approach through the use of different materials.
Rancang Bangun Mesin CNC PCB Berbasis Arduino Untuk Mendukung TEFA Jurusan Teknik Informatika Hermawanto, Fendi; Habibi, Hilda Jaya
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.73-80

Abstract

The State Polytechnic of Banyuwangi in the Strategic Plan 2020-2024 has a target to improve the quality of the curriculum and learning. To achieve these goals, a strategy is to establish a Teaching Factory (TeFa). One of the rapidly growing industries today is the Printed Circuit Board (PCB) manufacturing industry. This is evidenced by the presence of PCB printing websites such as Indomaker and marketplaces like Tokopedia and Bukalapak, which provide PCB printing services according to customer preferences with fast turnaround times. The research supported the development of the Teaching Factory in the Department of Informatics Engineering, Computer Engineering Technology study program. This will be achieved by increasing the number of CNC PCB machines to create a working system that closely resembles real industry conditions. The method used is the Research and Development (R&D) method, which is used to develop a product and test its effectiveness. During the testing of the X, Y, and Z axis movements, the CNC PCB machine was found to move according to the instructions provided by the Candle Software. In the testing of the PCB trace printing configuration using a V 30° router drill bit, the best results were obtained using a Cut Z of 0.15 mm and a Feed Rate of 20 mm/minute. The presence of the CNC PCB machine will facilitate the TEFA of the Department of Informatics Engineering in creating prototypes of a product before it enters the production stage..
Validasi Metode Pengukuran Kadar Total Flavonoid dalam Ekstrak Etanol Sirih Merah (Piper crocatum var. Ruiz & Pav) Menggunakan Nano Spektrofotometer BMG Lab. Tech. Hudayanti, Martini; Sarah, Elitawati; Kurniatin, Popi Asri
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.128-138

Abstract

Method validation is a crucial step when an analytical method is applied using different instruments to ensure the accuracy, precision, and reliability of the results. This study aimed to validate the method for determining the total flavonoid content in the 70% ethanol extract of red betel leaves (Piper crocatum) using a BMG LAB.TECH nanospectrophotometer equipped with a 96-well plate. This method offers advantages in terms of time efficiency and sample volume compared to conventional spectrophotometric techniques. The validation parameters assessed included linearity, precision, accuracy, limit of detection (LoD), and limit of quantitation (LoQ). The results demonstrated excellent linearity with a correlation coefficient (r) of 0.997. Precision testing yielded a relative standard deviation (%RSD) of 2.65%, while accuracy testing showed an average recovery rate of 104.33%. The LoD and LoQ were calculated to be 4.06 ppm and 13.52 ppm, respectively. Based on these findings, the total flavonoid content in the ethanol extract of the red betel leaves was determined to be 24.30 mg QE/g. Because the method meets the validation criteria outlined in the ICH guidelines, it is considered valid and suitable for use in educational laboratory activities and scientific research applications.
Penentuan Kualitas Kaolin sebagai Prekursor Sintesis Zeolit pada Kegiatan Praktikum Ismail, Rohmat; Erlangga, Manasye; Himawan, Ari; Afiah, Givana Indah Nurul
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.81-90

Abstract

Zeolite synthesis has attracted the attention of researchers today because of the functional properties of zeolites. The zeolite synthesis process can be influenced by various factors, one of which is the quality of the zeolite precursor. One of the precursor materials for zeolite synthesis is kaolin. This study aims to determine the quality of three kaolin brands used as precursors for zeolite synthesis in practicum activities. The quality of kaolin was assessed through gravimetric loss on ignition testing and analysis of the metal oxide composition using an X-ray fluorescence (XRF) spectrometer. The loss on ignition analysis results for kaolin A, kaolin B, and kaolin C samples were 7.94%, 7.87%, and 6.52%, respectively. The XRF analysis results, which included the compositions of SiO2, TiO2, Al2O3, Fe2O3, CaO, MgO, K2O and Na2O, were as follows: for kaolin A, 57.58%, 0.78%, 19.69%, 5.83%, 0.23%, 1.03%, 0.99% and 0.11%; for kaolin B, 56.30%, 0.80%, 21.30%, 7.19%, 0.08%, 0.52%, 1.19% and 0.16%; and for kaolin C, 68.03%, 0.80%, 14.40%, 5.08%, 0.32%, 0.94%, 0.95% and 0.01%. The two analysis results showed that the three kaolin samples had met the requirements as zeolite precursors based on the range of reference specification values: loss on ignitation<10%, SiO2 content 50–70%, TiO2 <1%, Al2O3 8.5–30.5%, Fe2O3 2–15.5%, CaO <1.68%, MgO 0.48–1.19%, K2O <3.6%, and Na2O <0.35%. The ensuing results furnish recommendations for the zeolite synthesis practicum, to select the most suitable kaolin type.
Inovasi Sistem Penjadwalan Laboratorium Terpadu melalui Aplikasi M-Room berbasis Google Spreadsheet di Poltekkes Kemenkes Jakarta I Hidayati, Auliya; Argianto, Argianto; Rini, Bekthi Pramudya
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.139-150

Abstract

The digital transformation in educational laboratory management requires a scheduling solution that is efficient, transparent, and cost-effective. This study aims to design and develop M-Room, an integrated laboratory scheduling system based on Google Spreadsheet to support the moving room policy at Poltekkes Kemenkes Jakarta I. The platform leverages Google Spreadsheet's collaborative features to synchronize schedules in real time among users. System development followed the Waterfall model, which included requirements identification through stakeholder discussions, sheet structure design and data validation (using dropdown menus and automated formulas), the creation of an interactive dashboard for room availability visualization, implementation, and testing through simulation and user evaluation. The system was piloted over two semesters (January–December 2024) involving 70 participants, consisting of educational laboratory staff, lecturers, students, and administrators. Evaluation results indicated that 68.6% of users utilized the room booking feature, 42.9% checked room availability prior to scheduling, and 18.6% scheduled the use of integrated laboratories. All respondents (100%) rated the interface as user-friendly, while only 5.7% experienced minor issues. A total of 87.1% stated that the system significantly improved laboratory management, and 88.6% gave the highest score for overall user satisfaction. Active engagement with the system’s core features reflects strong user enthusiasm toward M-Room. These findings suggest that M-Room enhances scheduling efficiency, promotes cross-departmental collaboration, and offers a cost-effective, easy-to-implement, and scalable laboratory management solution. Future development is recommended to include integration with the academic information system (SIAKAD), the addition of automated notification modules, and the use of historical data analytics for optimizing laboratory capacity. Thus, M-Room is expected to serve as a foundation for adaptive and sustainable digital laboratory management. This innovation may serve as a model for collaborative Google Spreadsheet-based solutions in other vocational institutions.
Perbandingan Sintesis Nanoselulosa dari Limbah Kertas Saring Praktikum dengan Hidrolisis Asam Anorganik dan Organik sebagai Upaya Pengelolaan Limbah Laboratorium Istiqomah, Zahrotul; Rahmantiyoko, Agus; Sunarmi, Sri
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 7 No. 2, Juli 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.2.91-99

Abstract

Nanocellulose is one of the nanoparticles that is widely used in various applications such as the base material of bioplastics and nanocomposites. Because nanocellulose has several properties including high mechanical and high thermal properties, transparency and lightness. Nanocellulose is generally isolated from lignocellulosic biomass, which contains high cellulose, is abundant and relatively cheap. This study aims to synthesize nanocellulose from filter paper practicum waste in the Fundamental Chemistry Laboratory of ITS, which has not been optimally used. The synthesis method used is acid hydrolysis, namely inorganic and organic acids. The results of the nanocellulose synthesis in this study are as follows: hydrolysis with inorganic acid hydrochloric acid and sulfuric acid is round like a ball with an average diameter size below 100 nm, for hydrochloric acid the average diameter is 53,14 nm and sulfuric acid 42,08 nm, while hydrolysis with organic acid, formic acid and citric acid, nanocellulose is shaped like a rod with an average diameter of 36,80 nm for formic acid and 46,23 nm for citric acid.

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